Math Forum / Math Software / Scilab / July 2009

Hi all experts,
I have some basic questions according code generation. Even after
reading the analog and digital book of Scicos and a lot of PDFs I lack
the knowledge how to use Scicos in a productive development cycle to

Since some days I try to use ScicosLab under SuSE 11.1. Because there
is no .rpm available I tried that one from Fedora and I tried to
recompile the sources. Both attempts now fail on the same point:
Starting "scilab" is without any problem, but when I enter "scicos"

Does anyone know of or have a Scilab functional equivalent of the
MATLAB pchip function?
Robert

during compiling of ScicosLab I get the following error:
************************************************
make[1]: Leaving directory `.../scicoslab-gtk-4.3/pvm3'
linking

I tried to build nsp2 (CVS version) but it looks
as if the folder
src/libminpack
is missing which causes link errors

Is there a way, in Scilab,  to extract xy-coordianate data from an
image (like jpg) of a graph? I am using OS X 10.4.
Robert

I want to design analog filter or get its transfer function. I find
"analpf" useful which designs low pass filter. But I cannot find
function to design other type of analog filters, like high pass,
bandpass, bandstop. I prepare to use transfer function transform, say

or more generally in subfigure.
For example, the bode routine horizontally splits the figure in two, one for frequency response and another for phase response.
If another plot routine is launched, the new curve is plotted in the last plot, which is the phase response.
Is it possible ...

I need to define a static variable within a function, i.e., a variable
whose scope is the function where it is defined and that it does
retain its value between two function calls.
Is there a way to do it in Scilab *without*  defining a global

In the following configuration:
 openSuse 11.1
 Scilab 5.1.1 + Scicos 4.2 installed via the SuSE repository
 dual head big desktop made with xrandr

upgrading from scilab 4 to scilab 5 I'm not able anymore to run a
script/command at the start up.
Anyone can help?
thanks in advance,

After suffering with both Matlab and Scilab using x^(1/3) to find the
cubed root and I was getting complex roots I found that Matlab has a
nifty function nthroot. I can't find an equivalent in Scilab the only
suggestion being exp(log(-27)/3) which returns 1.5 + 2.5980762i. Not

As there is no atan2 block in scilab, i used a maths expression block
to emulate an atan2 block. I used the equation "u1/(((u2^2+u1^2)
^0.5)+u2)".
When i try to simulate my models, there is this error "singularity in

I've got a problem running SciLab on my mac.
First, I tried to use the Binaries from scilab.org, but it didn't
work, it couldn't find scipad, so it was quite useless to me.
After that, I tried whether it would work with a self-compiled

This is for scicoslab4.3 on windows xp.
I have a GENERIC scicos block inside a superblock. How can I specify
the external scilab function (type 5) that is used by the GENERIC
block ? I currently have this function defined in a *.SCI file.