Constants, Dimensions, and Units - How to customize XML files for Constants, Dimensions, and Units - Сообщения
Is there some way we can create our own files of constants, dimensions, and units? Also, I would like to be able to choose which units will be used as the default result unit.
In my work, I use several dozens of unique units and don't want to spend time manually typing the result unit into the worksheet when I can train the computer to do it for me. That is what the computer is for.
If I could get information on how the unit.xml and constant.xml files work, I could produce the necessary files.
Is there some way we can create our own files of constants, dimensions, and units?
You can use this as reference (the built-in file was updated with new units since the last post)
Also, you can create your own snippet with your set of custom units.
Also, I would like to be able to choose which units will be used as the default result unit.
As for now is available only a beta imperial/SI choice (see here)
You can vote these requests:
- Measurement Systems support
- Automatic engineering unit prefixes like nm, km, etc.
You can use this as reference (the built-in file was updated with new units since the last post)
Also, you can create your own snippet with your set of custom units.
I did not see anything in the post or the attached file that looked like an explanation for how the files work. Am I supposed to hack the files by trial and error?
As for now is available only a beta imperial/SI choice
You can vote these requests:
- Measurement Systems support
- Automatic engineering unit prefixes like nm, km, etc.
Apparently, I am blocked from voting as I have just joined the forum. I would vote for both of these requests.
I did not see anything in the post or the attached file that looked like an explanation for how the files work. Am I supposed to hack the files by trial and error?
The second one. (The official way is to create and use a snippet).
Looking at the code posted by Martin:
<property dimension="253">
<add factor="1" exp="2" system="Metric" title="Ar" lang:ger="Ar">
<synonym name="Ar" lang:ger="Ar" />
</add>factor="1" exp="2" -> 1 * 10^2 = 100 (factor respect to the base unit)
system= is for the default measurement system (beta, as mentioned)
title/lang are for descriptions
synonym contains the string to type on the canvas
Apparently, I am blocked from voting as I have just joined the forum. I would vote for both of these requests.
Sorry I did not mentioned it, you have to register also in the BTS to vote or post bugs/feature request.
Maths are unitless. Engineering/Scientific formulas are constructed wrt to the
unit system in cause and wrt applicable constants[SI, Imperial ...]. So, no need
for units, just append the result in term of the system used [Ton/hr ...].
When intermediate calculations need the symbolic engine [Maple for instance],
can't use units. Assume your project delivers 10 results that need be shown in
term of the clients request, simple example: make all units "literal-unary"
Example: Ton/hr:=1 ,,,, gram/sec:=1 ,,,,
Where the result is in silent Ton/hr , make it speak ,,, brush to highlight
Ton/hr in the unary definition, paste in your result ,,, 123.456789Ton/hr.
My "Eisbach Handbook" [not existing anymore] gives Engineering formulas in
appropriate unit system as explained above. I have seen a 48" butterfly valve
to be installed in a 4" pipe. Sometimes, laughing is relaxing.
Jean
Not so simple to convince somebody to never use a unit system in calculations.
Maths are unitless.
Not everybody is working on math. I'm working on dimensional analysis. To me, math is a secondary consideration to test the dimensional analysis.
Even still, I have found several published physics equations that have bad dimensions. The reported dimensional resort is different from the actual dimensions of the units used and some of the math is simply not allowed. There used to be a relativistic equation for calculating magnetic fields from a moving charge, which I demonstrated was flat wrong. I haven't seen it so much in the past ten years since I pointed this out.
I hope someone is giving top priority to perfecting the units in smath, as this could be a powerful tool for people working in theoretical physics.
253 is for area as I can guess from the childrens); those numbers are hardcoded values, you can't invent them.
That is a major weakness for me. I have been developing a completely new unit system that has many more units than those presently being used. Is there a comprehensive list of all the units already hardcoded? Who would I communicate with to get more units integrated?
That is easy to follow.factor="1" exp="2" -> 1 * 10^2 = 100 (factor respect to the base unit)
system= is for the default measurement system (beta, as mentioned)
title/lang are for descriptions
synonym contains the string to type on the canvas
you have to register also in the BTS to vote or post bugs/feature request.
Thanks... voted!
That is a major weakness for me.
I understand, but I guess it's because was not designed for user-edit; for the insertion in few types of dimensions may be affordable, seems not your case.
I have been developing a completely new unit system that has many more units than those presently being used. Is there a comprehensive list of all the units already hardcoded?
AFAIK nope (I may be wrong).
Who would I communicate with to get more units integrated?
You can make a request in the BTS, selecting type as "Feature", you can post and/or attach a list of the units you want.
To ask directly the developer, the contacts are on the bottom of any post made by him (f.e. see here)
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