Hi, I have a problem using length() commang.

If used on matrix, it works well, but using the length() command on scalar value (which is, I think, matrix of size 1 by 1), it doesn't work well.



File with this problem: length_problem.sm.

Hello,

You get the last math region [MATH=eng]lx_1=length(-1)[/MATH]. If yoo would use numerical equal to, there would be an error issued.
And, no - scalar is not a matrix of size 1 by 1.

Regards,
Rdaovan

Hello,
thank you for your reply. Is trere any other way (instead of using "length()" command) how to find out the number of solutions of the equation?

Thank you for amazing SMath,
kind regards
Jan Skapa

Wrote

Hello,

You get the last math region [MATH=eng]lx_1=length(-1)[/MATH]. If yoo would use numerical equal to, there would be an error issued.
And, no - scalar is not a matrix of size 1 by 1.

Regards,
Rdaovan

Hello,

Wrote

Is trere any other way (instead of using "length()" command) how to find out the number of solutions of the equation?

Could you be more specific, please?

Regards,
Radovan

Hi,

I don't see your file therefore I'm not sure, but I think that this snippet can help you:

varManager.zip

EDIT(1): now i can see your file

use it in this way:
[MATH]x_1:ToArray(x_1)[/MATH]

EDIT(2): instead of [MATH]x_1:ToArray(x_1)[/MATH] you can use [MATH]x_1:stack(x_1)[/MATH]

(x_1 can be an array, a scalar or a text)

then you can use:
[MATH]length(x_1)[/MATH]


regards,

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