dix | quantifying large amounts of plaintext data

I have downloaded a [short media][1] i intend to convert then i will use the result as basis to practice and test any and all FFMPEG commands i learn or use later.

That video seems to have an unknown invalid stream which never disappears no matter everything i tried to discard it. When i try to work with it later i get various problems like missing codec or no stream which is not the focus here but the reason why i got stubborn to remove the things i cannot deal with.

The following probing prints a warning in yellow color on last row.

I'm doing a basic software development course. For my assignment I have to create a simple translator program in JavaScript. It has various requirements, and one is that if the user doesn't enter German or French when prompted for a language they are to receive a message saying "only French or German is allowed". But when I try to implement this in an "if" statement the alert triggers regardless... Code below!

I have this function to measure the similarity of a pair of dictionaries.

I've been reproducing Julia Silge's code from his Youtube video of Sentiment Analysis with tidymodels for Animal Crossing user reviews (https://www.youtube.com/watch?v=whE85O1XCkg&t=1300s). In minute 25, she uses tune_grid(), and when I try to use it in my script, I have this warning/error: Warning message: All models failed in tune_grid(). See the .notes column.

In .notes, appears 25 times:

I have an html structured like the exemple below:

I've noticed 2 cases in which Microsoft Translator Text should raise errors when using custom engines, but instead has an unexpected behavior.

I send a request with the method POST.
URL = https://api.cognitive.microsofttranslator.com/translate
parameters :
- api-version=3.0
- textType=plain
- category=my_engine_id
- from=de
- to=en

Headers={"Ocp-Apim-Subscription-Key": my_key,'Content-type': 'application/json'}

Body (JSON format) :

[{"Text": "Klicken Sie in jedem Bildschirm auf das Textbeispiel, das am besten lesbar ist."},
{"Text": "Verschiedene Themen aus den Bereichen Wortschatz, Satzbau, Kohärenz, Textwiedergabe,
Kommasetzung und Orthographie werden anhand von Textbeispielen und Übungen vorgestellt."},
{"Text": "„Auch wenn zwei Staaten in Deutschland existieren, sind sie doch füreinander nicht Ausland; ihre Beziehungen zueinander können nur von besonderer Art sein.“"},
{"Text": "Mit dieser Formel bricht der neue Kanzler ein jahrzehntelanges Tabu."},
{"Text": "Bislang wird der östliche Teil Deutschlands von den bundesdeutschen Politikern als SBZ, Zone oder „sogenannte DDR“ bezeichnet."}]

The response is as expected:

[{"translations":
[{"text": "On each screen, click on the text sample that is most readable.",
"to": "en"}]},
{"translations":
[{"text": "Various topics from the fields of vocabulary, typesetting, coherence, text reproduction, comma setting and orthography are presented using text examples and exercises.",
"to": "en"}]},
etc.

I change the parameter to=fr in the URL (instead of "en").

The response shows that the text has been translated into french, although the custom engine is only trained from DE>EN (therefore I think a generic engine was used instead, but there is no info in the HTTP response) !

[{"translations":[{"text":"Sur chaque écran, cliquez sur l’échantillon de texte le plus lisible.","to":"fr"}]},{"translations":[{"text":"Divers sujets des domaines du vocabulaire, du typage, de la cohérence, de la reproduction du texte, du décor de virgule et de l’orthographe sont présentés à l’aide d’exemples de textes et d’exercices.","to":"fr"}]},{"translations":[{"text":"\"Même si deux États existent en Allemagne, ils ne sont pas étrangers l’un à l’autre; Leurs relations les uns avec les autres ne peuvent être que d’un genre particulier.","to":"fr"}]},{"translations":[{"text":"Avec cette formule, le nouveau chancelier brise un tabou de dix ans.","to":"fr"}]},{"translations":[{"text":"Jusqu’à présent, la partie orientale de l’Allemagne est appelée par les politiciens fédéraux allemands SBZ, zone ou « soi-disant DDR ».","to":"fr"}]}]

Instead of this behaviour, I would have expected an error in the HTTP response :
400075 The language pair and category combination is not valid.

I change the parameter from=da in the URL (instead of "de").

The response shows that the translation is simply a copy of the source text, although it indicates that it was translated into "en" !

[{"translations":[{"text":"Klicken Sie in jedem Bildschirm auf das Textbeispiel, das am besten lesbar ist.","to":"en"}]},{"translations":[{"text":"Verschiedene Themen aus den Bereichen Wortschatz, Satzbau, Kohärenz, Textwiedergabe, Kommasetzung und Orthographie werden anhand von Textbeispielen und Übungen vorgestellt.","to":"en"}]},{"translations":[{"text":"\"Auch wenn zwei Staaten in Deutschland existieren, sind sie doch füreinander nicht Ausland; ihre Beziehungen zueinander können nur von besonderer Art sein.\"","to":"en"}]},{"translations":[{"text":"Mit dieser Formula bricht der neue Kanzler ein jahrzehntelanges Tabu.","to":"en"}]},{"translations":[{"text":"Bislang wird der östliche Teil Deutschlands von den bundesdeutschen Politikern als SBZ, Zone oder \"sogenannte DDR\" bezeichnet.","to":"en"}]}]

Same as for Case 1, instead of this behaviour, I would have expected an error in the HTTP response :
400075 The language pair and category combination is not valid.

Is it normal that I don't get an error for these 2 cases ? Has anybody else encountered this behavior before ?

Actually I would like to either use these error codes, or else check before sending the translation request that the language pair corresponds to the custom engine, do you know of some way to do it ?

I placed an accelerometer to several fishes in a field experiment to understand some of their behaviours. What I got was values of raw acceleration (X, Y, Z) of the fishes. This raw acceleration is decomposed into a part that is static (due to the gravity. I call it rmX, rmY and rmZ) and a dynamic part (due to the movement of the fish. I call it diX,diY and diZ). What I would like is to calculate the roll of my fishes in different circumstances (while swimming, resting, etc) since this information could be relevant from an ecological point of view.

The most complicated aspect in my case is that the accelerometers do not stay perfectly aligned with all the gravity acceleration on the Y-axis and being X and Z = 0. I always placed the accelerometer with the same orientation but static acceleration differs among fishes due to the impossibility of placing the accelerometer exactly in the same way in all fishes. For all individuals, in their natural position (belly down and dorsal fin up), the gravity acceleration is on all 3 axes.

What I had done to calculate the roll was this:

I devised a form array in the dix setion shown below.

I have a loop, where I need to evaluate the same process in several HTML elements. It looks like this: