do me a favor?

[sige0008]

Hi folks:

my sample data looks like following( tab-delimited):

Education Sex Experience Wage
10 1 5 10
5 1 10 9
15 0 10 15

Currently I am doing a project that will need Python/Tk as well as VTK(Visualizati on Toolkit) for image processing and visualization.

I want to plot one of variable in x-axes and one of variable in y-axes, and color by one of variables

I thought it may be a good idea to read data into python array (eg. each record into rows, attributes in columns) and then use a for loop to find the position of each points and color them.

Can anyone do me this big favour? give me some advices, thanks:-)

[bartonc]

I don't know if VTK has plotting functions built in, so...
I haven't gotten into it yet, but I'm planning on using sciPy for my data plotting needs. Yes, you have to learn a new package, but you don't have to write plotting functions.

[sige0008]

hi there:

I have another question about how to create a combo box (or listbox) in this project. can you help me please if you know :-)

Thanks

[bartonc]

import Tkinter as Tk

aList_of_data = [1,2,3,4]

if __name__ == "__main__":
    root = Tk.Tk()
    mainFrame = Tk.Frame(root)
    mainFrame.pack()
    lb = Tk.Listbox(mainFrame)
    lb.config(bg="white")
    lb.pack()

    lb.insert(0, *aList_of_data )
    
    root.mainloop()

[sige0008]

Thanks:-)

I thought there is no combo box in TK, is that right???

So I can only use list in my project.

[bartonc]

No combobox in tk is correct. I built a really fancy combobox that requires PIL to handle the graphics to make it look more native on Windows. It uses a popup menu to get an item out of list that is read in when it is created and is also editable. If you would like a stripped down version, I could probalby have it working in a day or so.

[sige0008]

Thanks, I solved this problem:-) I give your a link, you may intereste that:

Python megawidgets(pmw )
http://sourceforge.net/projects/pmw

Description:
A toolkit for building high-level compound widgets in Python using the Tkinter module. It contains a set of flexible and extensible megawidgets, including notebooks, comboboxes, selection widgets, paned widgets, scrolled widgets and dialog windows.

By the way:
After reading the data set, I want to display points into an axes. For example, each point should have two values(educatio n, experience) ie(10,20). Do you have any ideas for coding axes?? Thanks:-)

My final display should be something looks like the following picture:

my sample interface

[bartonc]

I recently switched from Tk to wxPython for a very complete and native look on Windows, but thank you for the link.

gnuplot module looks like it might work for you.

[sige0008]

Thanks:-)

I have learned a lots from you, thanks

but I still have one question about adding multiple scalars to a single points in vtk, do you have any tips. I thought I should do something about data attribute, but I am not sure how to do it.

Thanks

[bartonc]

Perhaps you can find a copy of Hans Petter Langtangen's book "Python Scripting fo Computational Science" where all this kind of thing is taught.

[sige0008]

I found the solution, thanks anyway:-)

you have given me a lots help, thanks! I really appreciate what you did