+3
Dear Team,
I really appreciate the data inspector for z visualization of the point cloud, but I can't find how this color grading works inside fme data inspector.In my case I wanted to bring cloud points to the shapefile by color gradation based on z value. so my output shapefile looks the same as fme data inspector view. how can I do this ? is there any tool available for color gradation for feature color (based on z value)
Best answer by takashi
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+17
Hi @f.kemminje , you can use the RGBGradationCalculator from FME Hub to create gradation color values stored in a list attribute (called _color{} by default), then use the ListExploder to explode the feature into multiple features each of them contains an attribute storing a color value derived from the list. The ListExploder also adds element index (0-based sequential number) to each feature.
Next, for each point, map its z-coordinate to an index (0 to the number of colors - 1) according to your desired rule.
You can then merge a color value corresponding to its z-coordinate with FeatureMerger, using the index as join key.
Note that the Shapefile format doesn't support storing feature color definition. You can just save the color value as a user attribute.
Hope this helps.
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