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Contour Levels

 
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cdimaria



Joined: 03 Aug 2006
Posts: 5

PostPosted: Thu Aug 03, 2006 9:16 am    Post subject: Contour Levels Reply with quote

I have created a 3d scatter plot from some data representing various thicknesses. The data group has an aim thickness along with a min and max. I would like to set up the contour levels so that if a value is above the max it is represented by one color, below the min it would be a second color and if between min/max it would be a third color. Is this possible? If yes, how?
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DPlotAdmin
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Joined: 24 Jun 2003
Posts: 2310
Location: Vicksburg, Mississippi

PostPosted: Thu Aug 03, 2006 9:37 am    Post subject: Reply with quote

Yes, it is possible, though not as direct as you'd probably like and the legend will show values you don't necessarily care about.

Right-click on your plot and select Scatter Plot Options. Under Color Based On select Z value. Set Intervals to 3. For the lower limit use min - (max-min). For the upper limit use max + (max-min). This will result in the middle level ranging from min to max. As mentioned above, the legend will show the lower and upper limits; if you want to delete those labels you'll unfortunately need to edit an image of the plot in a paint program.
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cdimaria



Joined: 03 Aug 2006
Posts: 5

PostPosted: Thu Aug 03, 2006 9:42 am    Post subject: Reply with quote

David,

Thanks for the quick reply. I'm generating the plots in .NET2005 and displaying them on a picturebox. Are there cooresponding commands I can send? Sorry if this is obvious, I'm a newbie for this product. BTW, great stuff! I've been looking for weeks for something like this.
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DPlotAdmin
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Joined: 24 Jun 2003
Posts: 2310
Location: Vicksburg, Mississippi

PostPosted: Thu Aug 03, 2006 10:29 am    Post subject: Reply with quote

Thanks for your comments.

[ColorBasis(0)] bases colors on Z value.
[ContourLevels(numlevels,lo,hi)] assigns contour levels to Z values. You want numlevels=3, lo=min-(max-min), and hi=max+(max-min)
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