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michael.bippes
Germany
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 Posted - 03/08/2006 : 04:42:54 AM
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Origin Version (Select Help-->About Origin): 6.0, German
Operating System: NT 4.0 SP 6
Starting from a matrix-sheet in which some fields are without data, I create an 3D-Plot with "wired-surface" (Drahtgittergeflecht). Since some data is missing, Origins sets these datapoints to zero. Thus, these datapoints are displayed in the plot as zero, that means that they are connected to the very ground and a pit appears in my plot. I already activated the "connect over missing data" (ber fehlende Datenpunkte hinweg verbinden), but this did not help.
How can I avoid these pits in my plots if I have no data to fit in? |
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michael.bippes
Germany
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Posted - 03/08/2006 : 04:49:32 AM
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| P.S.: I just found the right expression: wireframe and coloured wireframe is what I am using. |
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easwar
USA
1964 Posts |
Posted - 03/09/2006 : 10:40:42 AM
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Hi,
The checkbox for "Connect Line Across Missing Data" is at the top graph level and it applies to all layers in a graph (other layers may exist that contain 2D data with missing values). Unfortunately it does not apply to 3D plots and this is why you are encountering the problem.
Currently there is no solution to "fix" the plot so the surface does not dip to zero.
What you could do instead, if acceptable from a data point of view, is to write some code (LabTalk script or Origin C - Origin C will be faster and has better methods to access matrix data) where the code replaces the missing values with say average of neighboring cells. Then plot the matrix and you will get a "smoother" surface.
Easwar
OriginLab
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michael.bippes
Germany
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Posted - 03/10/2006 : 03:59:03 AM
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Thank your for your answer. I have been thinking about this solution, too, but I was hoping for a better solution.
Is there a solution for this problem in Origin 7.5? If not, I would suggest to implement such a function to the follow-up versions of origin. |
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easwar
USA
1964 Posts |
Posted - 03/10/2006 : 09:15:19 AM
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quote:
I have been thinking about this solution, too, but I was hoping for a better solution.
Hi,
By a "better solution" do you mean you want to leave the cells as missing values and not change them, but want the plot to not dip to zero? Or do you mean an easy way to replace missing values with say average from neighbors?
Easwar
OriginLab
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michael.bippes
Germany
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Posted - 03/14/2006 : 03:04:11 AM
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| By a "better solution" I mean to leave the cells as missing values and not change them, but to plot a graph without dipping to zero. |
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3D-Plot: connect over missing datapoints