Incorrect values for rank - getting incorrect values using rank - Messages
#1 Posted: 2/21/2013 10:57:28 AM
I'm using SMATH for a controls class that I am taking. I am getting bad values for rank of a matrix.
A=[0,1;1,0]
should return a rank of 2
I keep getting a 1
A=[0,1;1,0]
should return a rank of 2
I keep getting a 1
#2 Posted: 2/21/2013 11:11:35 AM
Seems that you defined A as a column vector. Depending on your settings, the comma serves as decimal point or as function argument separator.
type A:mat Enter
This gives you a 2x2 Matrix of placeholders.
type A:mat Enter
This gives you a 2x2 Matrix of placeholders.
Martin Kraska
Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx
#3 Posted: 2/21/2013 11:49:09 AM
The comma's are from my Scilab equation, sorry about the confusion. It looks like my problem is in the way I calculate the matrix. Attached is a quick test I put together.
#4 Posted: 2/21/2013 12:04:27 PM
You have made an error defining Γ
You need to use the augment() function; without this function you create a nested matrix.
BTW there is a bug because calling directly the rank function when the first matrix element is a nested matrix, a type conversion error appears.
regards,
w3b5urf3r
rank.sm
You need to use the augment() function; without this function you create a nested matrix.
BTW there is a bug because calling directly the rank function when the first matrix element is a nested matrix, a type conversion error appears.
regards,
w3b5urf3r
rank.sm
If you like my plugins please consider to support the program buying a license; for personal contributions to me: paypal.me/dcprojects
#5 Posted: 2/21/2013 12:07:37 PM
Excellent, thanks to both of you.
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