[Video] Who is White?

Who is White?

Uncensored Video Links: BitChute NewTube Odysee

A short discussion of who is classified as “white” in the US Census and US law with an emphasis on “white” in California and the American Southwest.

Article: http://wordpress.jmcgowan.com/wp/article-murky-us-census-numbers/

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(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).

[Article] Murky US Census Numbers

I recently ran across a claim citing the United States Census that non-white US population has increased from about 10 percent in 1921 to about 30 percent today that is almost certainly based on comparing apples and oranges:

Census records from 1921 indicate that non-whites comprised 10.2% of the American population that year while the 2010 census reports that non-whites now constitute more than 30% of the population. 38,39 Be that as it may, it can be argued that, while the numbers of non-whites in the United States have increased over the past century, so has the number of Planned Parenthood facilities.

McCrea, Sarah (2015) “Eugenics No Matter What?: An Investigation of the Eugenic Origin of Planned Parenthood and its Effect on Contemporary Society,” Black & Gold: Vol. 1.
Available at: https://openworks.wooster.edu/blackandgold/vol1/iss1/5 (pages 8-9)

The US Census did not start regularly counting Hispanics, which is a cultural category that includes persons with entirely European ancestry, some or all American Indian ancestry, Blacks, essentially anyone who traces their background to a Spanish speaking region or country, until 1970.

https://www.pewresearch.org/social-trends/2010/03/03/census-history-counting-hispanics-2/

The US Census now estimates about 18.5% of US population is Hispanic: https://www.census.gov/library/visualizations/2020/comm/us-hispanic-population-growth.html

California for example classified most Hispanics as white in 1921 and American Indians were explicitly exempted from the infamous California law banning interracial marriage — otherwise a huge fraction of the state population would have faced a bureaucratic nightmare when trying to marry. Today, I would estimate about 80% of Hispanics, defined as a Spanish surname, in California have visible American Indian ancestry. Hard to be sure, but probably very similar numbers in 1921. The US acquired a substantial non-white — as sometimes defined today — population in the Mexican-American war and the annexation of Texas. The US census avoided counting these people as separate from the “white” population. Note that many Hispanics self-identify as “white” when asked their race even if they have visible American Indian ancestry.

References on the Racial Classification of Hispanics in California

These are some references to back up my discussion of the curious laws and social customs of California in the past. This is the text of the California State Supreme Court decision in the Perez vs Sharp case that invalidated bans on interracial marriages in 1948:

https://scocal.stanford.edu/opinion/perez-v-sharp-26107

Note that the issue was the marriage of Andrea Perez, a Mexican-American woman who identified as “white” and Sylvester Davis who identified as “Negro”.

This is a very detailed article on the case: https://www.cschs.org/wp-content/uploads/2022/09/Legal-Hist.-v.-17-Articles-Perez-v.-Sharp.pdf

The interracial marriage law in California did not ban marriages between whites and either Mexican-Americans or American Indians. Mexican-Americans were usually classified as “white” legally in California.

Curiously, one could drive down to Mexico, get married in Mexico where interracial marriages were legal, and return to California which would recognize the marriage in another jurisdiction despite the law. Andrea Perez wanted to get married in her Catholic Church in LA, hence the challenge.

Not One Drop of Blood

There is a myth that one encounters on the Internet and in some political debates, that the United States historically had a one drop of blood rule where any non-white ancestry immediately resulted in being classified as non-white. There is even a Wikipedia page on the One-drop of blood rule which used to be grossly inaccurate and promote this myth. California with its large mixed-race population long deviated from this supposed rule.

(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).

[Substack Article] Does This Man Give a S### About You?

https://open.substack.com/pub/mathematicalsoftware/p/video-review-does-this-man-give-a?r=sp25t&utm_campaign=post&utm_medium=web

Audio podcast on Substack from a video review of The Real Anthony Fauci (Part 1) documentary by Children’s Health Defense and Robert F. Kennedy Jr. Problems with RFK Jr’s account of his experiences and relationship with Anthony Fauci, the idea that pandemic simulations like Event 201 are highly suspicious, and weak arguments about HIV and AIDS. Some improvements are suggested.

The Real Anthony Fauci URL (free but email registration required): https://www.therealanthonyfaucimovie.com/trailer?sub4=654055e3200343a6b981383a26891711&afid=362

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(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).

[Video Review] The Unknown Known

The Unknown Known: The Life and Times of Donald Rumsfeld is a 2013 documentary directed by Errol Morris, similar to his 2003 documentary The Fog of War about Robert McNamara, the controversial US Secretary of Defense from 1961 to 1968 during the Vietnam War. Rumsfeld was US Secretary of Defense from January 20, 2001 to December 18, 2006 with a similar level of controversy over his handling of the September 11, 2001 terrorist attacks and subsequent wars in Iraq and Afghanistan. With the United States embroiled in a hot proxy war with Russia in Ukraine, it is perhaps time to revisit some lessons from previous wars such as Vietnam and Iraq.

The Unknown Known does not feature the feel good self-help platitudes used in The Fog of War. Rumsfeld’s manner is blunter and more aggressive than McNamara. Like Fog of War with McNamara, The Unknown Known paints a picture of Rumsfeld as a well meaning, arrogant genius lost in his own intellectual and ideological fantasy world. This is done by pairing excerpts from lengthy interviews with Rumsfeld with contradictory news footage and video from some of Rumsfeld’s numerous, sometimes combative press conferences on the Iraq war. Rumsfeld for example is shown denying the George W. Bush Administration ever claimed Iraqi dictator Saddam Hussein backed Al Qaeda in the interviews paired with a press conference where he appears to clearly assert exactly this.

Rumsfeld’s Mysterious Motive

One ought to wonder, especially since The Fog of War was released in 2003, why a smart, shrewd bureaucrat and politician like Rumsfeld would set himself up for a similar hatchet job to McNamara’s unflattering portrayal in Fog of War. There are of course many excellent conservative documentarians capable of producing either a shameless puff piece or a more credible documentary with a few carefully selected and answered hard questions presenting Rumsfeld in a much more flattering light. Indeed, the Unknown Known ends with Errol Morris asking Rumsfeld why he agreed to the interview/documentary, perhaps to mollify the many more insightful viewers who should be asking themselves this question.

Rumsfeld: That is a vicious question. I’ll be darned if I know.

In 2011, Rumsfeld published a 834 page book Known and Unknown: A Memoir complete with a web site and links to electronic copies of many of his memos as Secretary of Defense. He seems to have engaged in a PR campaign for the book at the same time, including a combative interview with Abderrahim Foukara of Al Jazeera.

The Unknown Known documentary seems scripted and edited to confirm the prejudices and stereotypes of liberal Democrat intellectuals who read the New York Times, listen to NPR, and rarely question what they read or hear unless it is a guest opinion piece by someone like Rumsfeld. Surely Rumsfeld expected this, so indeed why give the interview? What is in it for Rumsfeld?

A Failure of Imagination

That said, Morris lets Rumsfeld get away with some whoppers. Speaking about the September 11, 2022 terrorist attacks, Rumsfeld attributes the debacle and Pearl Harbor both to a “Failure of Imagination.” Not just Rumsfeld, but historical footage and CGI animations in the documentary imply no one anticipated the Japanese could or would launch a successful attack on the US Pacific fleet in Pearl Harbor. This of course is and was total nonsense.

Up until late 1940, the US Pacific Fleet operated out of the port of San Pedro in southern California — not Pearl Harbor, a much safer location than Pearl Harbor, under the command of Admiral James Richardson. President Roosevelt “temporarily” sent the fleet to Pearl Harbor for “two weeks” that soon turned into a permanent relocation. Richardson challenged the decision, writing a report outlining in large measure the Japanese attack that happened. He was fired by Roosevelt and replaced by Admiral Husband Kimmel who Roosevelt then blamed for the disaster. Roosevelt and his staff had been warned very specifically of the dangers of a surprise aerial attack by the Japanese months before Pearl Harbor.

Similarly, the US Air Force and other agencies had performed several simulations of terrorist attacks in which planes were hijacked and flown into buildings prior to September 11, 2001. Astonishingly, simulations of hijacking scenarios were under way on September 11, 2001, apparently contributing to the confusion during the attack: “is this a simulation or real?” The Air Force would go on to repeatedly change their stories about the failure of the air defense system on September 11, 2001. Despite his hard nosed image, Rumsfeld never seems to have conducted a tough, thorough investigation into the failure, instead citing bogus “failure of the imagination” excuses.

According to the official story — the 9/11 Commission report — Flight 77 turned off its transponder — surely a red flag — over forty minutes before it struck the Pentagon. It proceeded to fly off course to the Pentagon, the US Capitol City, at an altitude allegedly over 30,000 feet in full view of the multi-billion dollar active air defense radars — they do not require a transponder — which are supposed to track and intercept nuclear bombers from Russia and other threats. Yet the fighter planes stationed at Andrews Air Force base only miles from the Pentagon and several other air bases around DC failed to intercept the plane. Nor did any of the presumed classified defenses, surface to air missiles, etc. around Washington DC stop the plane which in fact could have contained nerve gas, biological agents or even a nuclear weapon.

Given the active air defense radars, the main reason to turn off the transponder seems to be that one plans to fly under the radar, have a way to jam the active radars, or have some other way to become invisible to the active air defense radars. Did something like this happen? If so, why has it never been disclosed?

Torture Porn

A large section of the documentary dwells on the alleged torture of Guantanamo prisoners which Rumsfeld largely blames on the CIA and the Department of Justice which authored the notorious memos justifying torture and the Abu Ghraib scandal clearly conducted by DoD soldiers and not the CIA. Rumsfeld concedes abuses occurred, he was “the captain of the ship” and responsible, and claims to have offered his resignation to President Bush after the scandal broke — which Bush refused. The documentary shows what appear to be segments of a hand written resignation note.

This certainly beats Robert McNamara who managed to disclaim any responsibility for anything that went wrong in the Vietnam War in The Fog of War.

But are BDSM abuses perpetrated by enlisted men and women, allegedly acting without orders or directions from above really the most serious problems during Rumsfeld’s reign?

Conclusion

Why does a shrewd, tough politician, bureaucrat, and sometime corporate CEO like Donald Rumsfeld grant a lengthy interview for a documentary that paints him as a delusional whacko? Especially when the documentarian has done this before to a previous Secretary of Defense who mismanaged a previous disastrous war? I’ll be darned if I know. 🙂 One should however strongly suspect a hidden agenda.

(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).

[Video Review] Lessons for Ukraine from the Vietnam War?

With President Biden invoking Armageddon and the United States embroiled in a hot proxy war with Russia, the other major nuclear superpower, in the Ukraine, the lessons of Vietnam may be especially relevant today. The Fog of War is a 2003 video documentary on the career of former US Secretary of Defense Robert McNamara (1916-2009) primarily focusing on the Vietnam War in which 58,220 Americans and many more Vietnamese, Cambodians, and Laotians perished. The war had a reported cost of $168 billion in 1960’s dollars ($950 billion in 2011 dollars). McNamara was Secretary of Defense under Presidents Kennedy and Johnson from 1961 to 1968. He has been widely criticized for his leadership of the war effort. It is sometimes presented as a mea culpa by McNamara.

The documentary is essentially an interview with McNamara, eighty-seven (87) at the time, interspersed with historical news footage that sometimes contradicts McNamara’s often opaque — one might say foggy — answers. In many respects it seems like a non-apology apology in which McNamara makes hazy statements that in fact avoid responsibility, passing the buck repeatedly to his former boss Curtis LeMay, President Johnson, unnamed subordinates (for the decision to use the Agent Orange “herbicide” in Vietnam), and others while sounding deeply but vaguely concerned about his fellow man. It is structured as a self-help video for future generations with eleven lessons from McNamara — all the sort of general mostly feel-good platitudes common in self help materials: e.g. “Empathize with your enemies” — a touchy-feely variant of the old standby “Know your enemies.”

At no point does McNamara say something like: ” I made decision X. In retrospect it was a bad decision and I regret it.” In discussing the controversy over Agent Orange, he says some people think the chemical was dangerous, implies someone else made the decision to use it, says he cannot recall who made the decision, and expresses vague concern, not really regret, that it was used during his tenure as Secretary of Defense. He does not discuss the taboo on use of chemical weapons in warfare that grew out of their use in World War I, a taboo that even Nazi Germany which had developed nerve gases far deadlier than the weapons used in WWI obeyed during WW2. Surely there should have been a cabinet level review — with the President and Secretary of Defense (McNamara) involved — of any decision to use a chemical weapon.

Good Cop, Bad Cop?

Good cop/bad cop is a psychological tactic used in negotiation and interrogation, in which a team of two people take opposing approaches interrogating their subject. One interrogator adopts a hostile or accusatory demeanor, emphasizing threats of punishment, while the other adopts a more sympathetic demeanor, emphasizing reward, in order to convince the subject to cooperate.

The “bad cop” takes an aggressive, negative stance towards the subject, making blatant accusations, derogatory comments, threats, and in general creating antipathy with the subject. This sets the stage for the “good cop” to act sympathetically, appearing supportive and understanding, and in general showing sympathy for the subject. The good cop defends the subject from the bad cop. The subject may feel able to cooperate with the good cop, either out of trust or out of fear of the bad cop and may then seek protection by the good cop and provide the information the interrogators are seeking. The order can also be reversed. When performed in this manner, the good cop will try to gain a subject’s trust. If that fails, the bad cop will intimidate the subject to make them crack under pressure

https://en.wikipedia.org/wiki/Good_cop/bad_cop

In many respects, McNamara’s interview and the documentary reflect what seems to be the modern liberal Democrat Party line on the Vietnam War — and the more recent Iraq War II. Something like: the Vietnam War was a mistake. Kennedy and Johnson meant well. Nixon didn’t. JFK and LBJ were browbeaten and misinformed into the debacle by hard line and often dishonest military and CIA leaders such as Air Force General Curtis LeMay whom McNamara paints as an ogre, CIA Director Allen Dulles, General William Westmoreland, failed Republican 1964 Presidential candidate Barry Goldwater, and others. Once Nixon became President, the naive ineffective but much smarter and more caring Democrats “woke up” and abandoned the war.

In 1964 Lyndon Johnson ran as a peace candidate against the crazed maniac war Republican war hawk Arizona Senator Barry Goldwater. The documentary has a brief clip of Goldwater stating bluntly that the US is in a war in Vietnam and the administration is lying to the public, which indeed seems to have been true.

In August of 1964, only three months before the Presidential election, there was an alleged series of incidents in the Gulf of Tonkin near Vietnam where the North Vietnamese allegedly “attacked” the US fleet. These attacks seem to have killed or injured no one and caused either no or minimal damage. McNamara discusses the “attacks” assuring the viewers that yes the “attack” on August 2 occurred but the second attack on August 4 was apparently a “mistake” by somebody, not him obviously. Usually the term “attack” brings up thoughts of events like the September 11, 2001 attacks that killed almost 3,000 Americans or Pearl Harbor with 2,403 deaths in 1941.

Nonetheless, President Johnson seized upon the “attacks” and gave a speech to the US population seeming to claim the US was bombing North Vietnam as he was speaking, which would have required the planes to be airborne from their base in the Pacific before the alleged second attack. Not surprisingly Barry Goldwater pointed out the timing problem and was ridiculed. Goldwater would give several speeches during the election campaign questioning the incidents and suggesting a coverup.

In the Fog of War McNamara’s vague assertions about the incident and audio tapes played by the documentary suggest Johnson and McNamara may have been misled by either incompetent or willfully deceptive military officers who sound rather unsure of their own claims. Since 1964, tapes have been released indicating Johnson and McNamara privately had doubts about the incidents, which nonetheless did not delay or moderate the immediate statements to the public or the reported counter-attack, the bombing.

Of course, with no casualties, the President and Secretary of Defense could easily have released a reassuring statement through the Presidential spokesman indicating there had been a possible minor incident with no casualties and the US was investigating to determine what actually happened before responding.

The highly publicized attacks with no casualties increased fears of war during the election campaign and seem to have helped Johnson’s campaign against the right wing hawk Goldwater. Johnson was the good cop and Goldwater the bad cop — whether by design or accident. The Gulf of Tonkin resolution giving the administration a carte blanche for war in Vietnam was passed on August 10, 1964 with strong bipartisan support, not unlike the recent resolution to support Ukraine.

McNamara also seems to use the good cop/bad cop routine in his discussion of the Cuban Missile Crisis with his former boss Curtis Le May as the crazed “bad cop” warmonger planning World War III. By comparison, JFK and McNamara seem reasonable. We are led to think: Thank God Curtis Le May was not in charge. There is no discussion of the convenient timing of the crisis which boosted JFK’s approval ratings dramatically, only weeks before the November, 1962 mid-term elections.

Fog of War or Smokescreen?

Both McNamara’s answers on camera and the documentary emphasize McNamara’s brilliance: a top student before attending Berkeley, an Irish kid atypically outcompeting smart Jewish, Chinese, and Japanese students at Piedmont High School in Piedmont, CA, a top student at Berkeley, attending Harvard business school, a key aide to Curtis Le May during World War II, and whiz kid at Ford before being tapped as Secretary of Defense by JFK. Yet this self-described genius (I think he probably was a genius) repeatedly passes the buck by portraying himself and his boss, tough Texas politician Lyndon Johnson, as naive simpletons repeatedly hoodwinked and even intimidated by subordinates. Who us? We were only in charge!

Lessons for Ukraine?

While the Fog of War’s eleven self-help platitudes are of little practical value in the modern crisis, there is a sobering lesson, not a new one.

Governments, including specifically highly educated, intellectual liberal Democrats who preach peace and brotherly love, frequently lie, blatantly and on serious matters such as war and peace, sometimes just to win the next election — no matter the subsequent costs to the nation or the world. Super smart officials like Robert McNamara lie and are often excellent liars and masters of double talk. They get away with it too; McNamara was rewarded with a Presidential Medal of Freedom and a cushy, highly paid job as President of the World Bank from 1968 to 1981.

(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).

Perpetual COVID Boosters: No Surprise

Another disadvantage of non-infectious vaccines is that the protection they confer generally is not as long-lasting as the protection produced by vaccination with a live microbe.

Lauren Sompayrac, Ph.D., How the Immune System Works, 6th Edition, (2019) Wiley, Blackwell, Hoboken, NJ, p 127

In order for a vaccine to mimic the invasion of a pathogenic microbe, the immune system must view the vaccine as both foreign and dangerous. This is not a problem for a vaccine which uses a crippled virus — because a crippled virus naturally provides both signals. However, for vaccines composed of only one or a few microbial proteins, providing the requisite danger signal can be a serious problem. Indeed, if a foreign protein is injected into a human, the immune system generally just ignores it — because it poses no danger. (EMPHASIS ADDED)

Because of the requirement for a danger signal, it is common practice to combine vaccines with an adjuvant (derived from a Latin word meaning “help”). In fact most of the vaccinations that you have received probably contained aluminum hydroxide or “alum,” which functions, at least in part, by providing that important danger signal.

Lauren Sompayrac, Ph.D., How the Immune System Works, 6th Edition, (2019) Wiley, Blackwell, Hoboken, NJ, p 130

What danger signal means is that the “adjuvants” are toxins that activate the immune system.

The mRNA based COVID vaccines from Moderna and Pfizer/BIONTech are non-infectious vaccines, also known as inactivated vaccines, largely comprised of the SARS-COV-2 spike protein manufactured from the mRNA which purportedly codes for the spike protein. The spike protein binds to the ACE-2 receptor, the angiotensin converting enzyme II receptor, and enables the SARS-COV-2 virus to enter the cells by imitating angiotensin. Angiotensin is a key component of a complex system that regulates blood pressure and cardiovascular function.

The main point is one would always have expected the COVID vaccines based on past experience with non-infectious — also known as inactivated vaccines — to fade and require boosters at some point, unlike live attenuated vaccines. This is a perpetual money machine just like selling an addictive pain killer such as oxycontin to patients or a deadly non-addictive short term pain killer that wears off and requires repeat uses and repeat purchases — like Vioxx — to patients. We now know the COVID vaccines fade in a matter of months if they work at all.

(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).

[Python] How to compute future date with millisecond precision and timezone displayed

Use the Python datetime module as follows:

# [Python] How to compute future date with millisecond precision and timezone displayed
import datetime
wait_duration_dt = datetime.timedelta(days=400, hours=2, minutes=30)  # expected wait
today_dt = datetime.datetime.now()  # current date/time in local time zone
future_date_time = today_dt + wait_duration_dt  # compute future date
# get human readable local time zone
LOCAL_TIMEZONE = datetime.datetime.now(datetime.timezone.utc).astimezone().tzinfo
print(future_date_time, LOCAL_TIMEZONE)

(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).

[Python] How to get function signature

How to get function signature in Python

Use:

import inspect
function_signature = inspect.signature(function_reference)

Full Example

#
# [Python] How to get function signature
#
import inspect

def myfunc(a, b, multiplier=1.0):
    return multiplier*(a + b)

print("myfunc(1,2) is:", myfunc(1,2))

sig = inspect.signature(myfunc)

msg = "function signature is: " + str(sig)
print(msg)

Note that the signature sig above is not a string (a Python str object). Must be cast to a Python str to concatenate with a string as shown in computing msg.

Python demonstration code output

(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).

[Python] How to plot text in normalized coordinates in matplotlib

Normalized coordinates refers to plot coordinates where the horizontal and vertical axes run from 0.0 to 1.0 or zero percent to 100 percent of the plot dimensions. One often wants to position text labels or annotations in this way. This is NOT the default for the plt.text(…) function in matplotlib, the plotting add on module for Python that emulates MATLAB style plotting.

The key functions in matplotlib for normalized coordinates are:

ax = plt.gca()  # get the current axes of the plot
plt.text(x, y, "my text", transform=ax.transAxes, fontsize)

This is a short program showing the full use of these two function in context.

# How to plot text in normalized coordinates (0, 1) in matplotlib
# ax = plt.gca()  # get current plot axes object
# plt.text(x, y, string_message, transform = ax.transAxes, fontsize)

import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0.0, 10.0, 100)
y = 10*x**2
fig = plt.figure()
plt.title("How to plot text in normalized coordinates in matplotlib", fontsize=8)
plt.plot(x, y, 'g-', label='parabola')
# Plot text in normalized (0.0, 1.0) coordinates in matplotlib
ax = plt.gca()  # get current plot axes object
# NOTE: lowercase first letter of transAxes below
Y_POS = 0.91  # in range 0.0 to 1.0 (100%)
this_text = f"plt.text(0.01, {Y_POS}, \"this text\", transform=ax.transAxes"
plt.text(0.01, 0.95, "ax = plt.gca()", transform=ax.transAxes)
plt.text(0.01, Y_POS, this_text, transform=ax.transAxes)
#
plt.minorticks_on()
plt.grid(True, which='major', color='k')
plt.grid(True, which='minor')
plt.xlabel('X')
plt.ylabel('Y')
plt.show()
fig.savefig('matplotlib_normalized_coordinates.jpg', dpi=72)
Output Plot with key function text positioned in normalized coordinates

(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).

[Python] How to combine two column vectors into a single column vector

How to combine two column vectors into a single column vector in Python and NumPy

Use the NumPy vstack(…) function as show below:

import numpy as np
one = np.array([[1], [2]])
two = np.array([[3], [4]])
blatz = np.vstack((one, two))
print(blatz)
[[1]
[2]
[3]
[4]] 
How to combine two column vectors into a single column vector in Python and NumPy using vstack

(C) 2022 by John F. McGowan, Ph.D.

About Me

John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).