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 Contour Plot Options		  New Topic  Reply to Topic
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meluks

4 Posts
Posted - 03/08/2011 :  11:03:02 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release: OriginPro 8G SR1
Operating System: Win XP SP3

Hi,

I'm quite new to Origin and I want to "automate" a plot.
I could manage to load a Excel File and to plot it with a template.
First question:
Now I want to modify the Increment of the x-Axis to 0.25. I tried with
Axis axesX = grphLayer.XAxis;  
axesX.Scale.From.dVal = -1;
axesX.Scale.To.dVal = 1;
axesX.Scale.IncrementBy.dVal = 1/4;

But only the "From" and "To" values changed in the graph. Not the ticks. Is this the wrong command?
Second question:
I want to change the settings for the levels of the color map of the graph. I want a minimum value of 0.1 and a maximum value of 0.8 and 8 for the number of levels. How can I set this with OriginC?
Third question:
How can I set the first row of the book as long name with OriginC?

Hopefully someone can help me Thanks a lot!

Penn

China
644 Posts
Posted - 03/08/2011 :  10:04:26 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

For the first question:

Two issues:
1. IncrementBy here is not the increment of axis, it is used to specify how to set the increment, if 0 (default value), by specifying the increment value, if 1, by specifying the number of major ticks. When IncrementBy is 0, use Value to set the increment.

2. 1/4 will return zero, if you want 0.25, please use 1.0/4.0.

Sample code can be:

Axis axesX = grphLayer.XAxis;  
//Tree tr;
//tr = axesX.Scale;  // set a break point here to see the tree structure
axesX.Scale.From.dVal = -1;
axesX.Scale.To.dVal = 1;
// axesX.Scale.IncrementBy.dVal = 0;  // default value is 0
axesX.Scale.Value.dVal = 1.0/4.0;


For the second question:

Please refer to Plot XYZ Contour from worksheet and custom lines and Plot Contour from matrix and custom colormap.

For the third question:

You can do that like this: 1. Set the row to the Long Name by SetAsLabel method, and then delete this row by DeleteRow method.

Penn
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meluks

4 Posts
Posted - 03/09/2011 :  02:26:34 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

thanks for your help. It worked!
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