[Scilab-users] {EXT} help for specific plot

[Vesela Pasheva]

Thank you, Christophe,

param3d works exactly as I have expected. This was my idea.
Now I will try the second option you have proposed.

Thank you again.
Vesela




На 10-09-2019 17:44, Dang Ngoc Chan, Christophe написа:
> Hello,
> 
>> De : Vesela Pasheva
>> 
>> I am dealing with a closed planar contour, presented in a struct 
>> PS.x,[],PS.y,[]
>> with m points. The contour is closed, so m+1 point coincides with the 
>> first.
>> Parallel to this I have a quantity TS (temperature) as an array which 
>> elements
>> correspond to the points of the contour.
>> 
>> The question is: how to present graphically the data - the points, and 
>> the
>> temperatures. It seems to be a cilindrical surface, which base is the 
>> contour,
>> and heghts are the values of TS.
> 
> I'm not sure to understand well but here are a few ideas:
> 
> 1. The TS parameter can be the z axis.
> If PS.x, PS.y and TS are vectors of the same size, try the param3d() 
> function
> https://help.scilab.org/docs/6.0.2/en_US/param3d.html
> 
> something like
> 
> param3d(PS.x, PS.y, TS)
> 
> 2. The TS parameter can be represented by a color.
> Have a look at the scatter() function:
> https://help.scilab.org/docs/6.0.2/en_US/scatter.html
> 
> but you will have to discretize the TS values to associate a value to a 
> colour
> which is not straightforward.
> 
> You can also define a matrix of values,
> you then discretize the x and y values.
> The pixels corresponding to a (PS.x(i), PS.y(i)) have their TS value,
> the other pixels have a %nan, then you can use grayplot()
> 
> https://help.scilab.org/docs/6.0.2/en_US/grayplot.html
> 
> Hope this helps
> 
> --
> Christophe Dang Ngoc Chan
> Mechanical calculation engineer
> 
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