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btink
Germany
8 Posts |
 Posted - 08/02/2006 : 05:34:15 AM
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Origin Version (Select Help-->About Origin): OriginPro SR4
Operating System: Windows 2000
Hello, I have data from 0.2 to 4.4 in both x and y in steps of 0.2. I would like to represent the magnitude of the data(z) on the x-y quadrant in the form of circles, whereby the area of the circles are directly proportional to the magnitude of z. Is there a straightforward way of doing this?
Thanks,
Brad
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Mike Buess
USA
3037 Posts |
Posted - 08/02/2006 : 08:06:46 AM
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Hi Brad,
Bubble map is close. Assuming your worksheet is A(X), B(Y) and C(Z)...
1. Create column D(Y).
2. Set its values to col(D) = abs(col(C)).
3. Select columns A, B and D as in Data2 below.
4. Select Plot > Bubble/Color Mapped > Bubble to create Graph1.
Mike Buess
Origin WebRing Member |
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btink
Germany
8 Posts |
Posted - 04/08/2007 : 5:03:16 PM
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I have a follow up on my previous post. Consider this time that I have TWO data sets taken on an x-y grid. Using bubble plot the area represents the z-value nicely, but I would like to compare two datasets. Therefore I would like to plot two semicircles (one white, one black) for each x,y point so that I can compare the two datasets directly. Is this possible with Origin?
Thanks, Brad
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zachary_origin
China
Posts |
Posted - 04/08/2007 : 8:55:52 PM
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Follow Mike's steps,
1> Create columns A,B,C,D and then create columns E,F,G,H for the second dataset similarly.
2> Highlight columns A, B, E, F and select Plot> Scatter.
3> Now the two datasets are plotted in same size, double-click the curve to open the Plot Details dialog.
4> in the dialog, first go to the Group tab and select Independent. Then select the first dataset in left panel and switch to Symbol tab in the right panel, select col(d) for size (maybe Scaling is needed for the symbol showing clearly). Then do the same for the second dataset.
5> Click Apply to see the effect.
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btink
Germany
8 Posts |
Posted - 04/23/2007 : 09:41:39 AM
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Zachary, thanks for your note. I have been successful in implementing your suggestions, but I still find the graph to be lacking information. For instance, notice that your triangles cover your circles for some points and vice versa and a great deal of the information or data is lost. I would be nice to have an option to plot the magnitude of one dataset as a white semi-circle occupying the left side of the data point and a black semi-circle occupying the right side of the data point for the other dataset. In this way, none of the data gets covered by the other dataset.
Thanks,
Brad
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Hideo Fujii
USA
1582 Posts |
Posted - 04/23/2007 : 2:06:53 PM
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Hi Brad,
> I would be nice to have an option to plot the
> magnitude of one dataset as a white semi-circle
> occupying the left side of the data point and
> a black semi-circle occupying the right side of
> the data point for the other dataset.
> In this way, none of the data gets covered by
> the other dataset.
It may not a perfect solution, you can make a graph
like below by sellecting "Half Left" circle symbol
for one column, and "Half Right" for other. If you
don't like to show black edge over red fill, you can
try both colors the same.
--Hideo
OriginLab
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Plotting 3D data on a 2D grid