Math Forum / Math Software / Scilab / May 2006

Well I  didn't use Scilab for a while now ... :-) so I can't wayt to see
what's new.
I have a problem however, I can't compile it.
I tried the source rpm from Dries repository but no luck.

We had some issues with the gamma function used to compute n!
We should have n!=gamma(n+1)
Yet,
gamma(n)-floor(gamma(n)) isn't equal to 0 for values of n from 12 to

I'm executing exec("builder.sce") script. And I would like to extract
path part of the script. It is possible?

I am trying to switch mark_mode on by default. I have changed a couple
of settings in a .scilab file at startup which scilab happily accepts.
But when using plot([1,2,3]) mark_mode is off.
What have I missed?

Been trying to draw a graph. could someone please tell me what
g('node_x') =
g('node_y') =
mean in the example below?

I am adding some custom menus to my scilab application on Windows and that
works fine enough. But I wish to have some of the custom menus be disabled
at startup, as I want to enable them programmatically later.
However, using the unsetmenu command in conjunction with the scilab ...

Who known?
I known SIVP can do it,but it can only play in linux,not Windows

en :
every time I start scilab, I get the same random values with grand()
that's because the "current generator" is set to default
how to use "grand('setcgn',G)" (or something like this) to get

I just came across a problem when using the Scicos "sign" block and the
Scilab command "lincos" to create a state-space system of my Scicos
model.
The system contains the implementation of several differential

Is there any documentation on how much of Modelica is supported
by scicos implicit blocks?

Thanks in advance.
Just wondering if there is a comparatively easy way to draw
surfaces/solids of revolution (obtained by rotating the graph of
sufficiently smooth functions about a given line on the xy-plane)

I would like to add a quote in a string. How can I do
For example:
MyString ='Test ''' Test';
disp(MyStrin)

Sorry to submit a question about another perhaps trivial matter but I
cannot find it at all in the Scilab help.
An application I am developing uses some matrix multiplications, and often
I get the warning "matrix is close to singular or badly scaled ....". I

Currently I have a set of data points but without an equation. Is there
any function in scilab that can predict a curve based on the trend of
the scattering points?
Thanks

I am developing a data analysis application using Scilab4 for my
colleagues who are strict Windows users. The application involves creating
many line plots of data using plot2d. Most plots include more than one
line curve and some plots are two plots in one using subplot.