merged features in TIN vs raster mosaic

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12-15-2017 09:07 AM
Kevin_Smith
New Contributor II

I have a five lines feature classes that I originally created individual TINS (Create TIN gp tool) for, from the TINS I created rasters (TIN to Raster gp tool). I then mosaicked all the grids into one master grid(Mosaic To New Raster gp tool) using the mosiac operator of maximum.

Looking for a way to be more efficient,  I merged (Merge gp tool)  the five line feature classes into one  line feature class, then converted the lines to a TIN (Create TIN gp tool) and the TIN into a grid (TIN to Raster gp tool). All feature classes are in a file geodatabase.

When I do raster math subtracting one grid from the other, I am seeing massive differences (almost 50ft). I can understand some differences on the edges where the tinning is behaving differently than the mosaicing, however there are 10 foot differences between the line features.

Does anyone have any ideas on what might be causing the problems, and which data is correct?

Thanks

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