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+--- Thread: Anyone Know if there is a fast way to extract number from all numer matrix? (/thread-22593.html)
Anyone Know if there is a fast way to extract number from all numer matrix? - Assassinatemax - 10-28-2024 01:59 AM
Here is what I enter:
[1 2
3 4](1,1) and the error: Syntax Error raised.
I can extract the value normally from this matrix:
[1 2
a 4](1,1) where a is a variable.
I am pretty sure this is caused by how calculator treat the matrix.
RE: Anyone Know if there is a fast way to extract number from all numer matrix? - Wes Loewer - 10-28-2024 04:34 PM
From Home, try the GET function.
GET([[1,2],[3,4]],2,2) --> 4
From CAS, try
[[1,2],[3,4]][2,2] --> 4
RE: Anyone Know if there is a fast way to extract number from all numer matrix? - Albert Chan - 10-28-2024 05:08 PM
(10-28-2024 04:34 PM)Wes Loewer Wrote: From CAS, try
[[1,2],[3,4]][2,2] --> 4
It work. However, INPUT side showed this: [[1,2],[3,4]]([1,2]), a display bug.
RE: Anyone Know if there is a fast way to extract number from all numer matrix? - Wes Loewer - 10-28-2024 07:09 PM
(10-28-2024 05:08 PM)Albert Chan Wrote:(10-28-2024 04:34 PM)Wes Loewer Wrote: From CAS, try
[[1,2],[3,4]][2,2] --> 4
It work. However, INPUT side showed this: [[1,2],[3,4]]([1,2]), a display bug.
I seem to recall this being discussed here before but I can't find it now. Maybe it was somewhere else. It's clearly a display bug as turning off Textbook Display makes it display correctly.
I suspect this issue stems from xcas having 0-based arrays while the Prime has 1-based arrays.
I just filed a bug report.
RE: Anyone Know if there is a fast way to extract number from all numer matrix? - Wes Loewer - 10-29-2024 02:26 AM
Here's where I read about it before: https://www.hpmuseum.org/forum/thread-15520.html
(Someone pointed me to this post.)