When using "Point to Raster"-Tool in ArcMap I noticed that my point with the elevation of e.g. 128.436m will be converted to a cell with a value of 128.435997.

Is it only a display problem with the identify-tool or was my point be actually edited?

  • Explore your point data, what is the precision of the field that the value is coming from? Are you rounding the display for the point dataset and the underlying dataset is at 6 decimal places? – Hornbydd Feb 21 at 14:22
  • I created the point-shp from a xyz-file with 3 decimal places. So they should only have 3 decimal places instead of 6 as in the converted raster (shown with the identify-tool). I also tried to convert the created raster back to ascii-format and I saw again only 3 decimal places in that ascii-file. – PDUY Feb 21 at 14:25
  • Interesting so if it is 3 decimal places in the ASCII file then it suggests to some sort of display issue.Not sure why? – Hornbydd Feb 21 at 14:39
  • IEEE floating-point representation issues would explain why a 4-byte float would round to ...997 on display. – Vince Feb 21 at 15:08
  • @Vince: So is it just a display problem? – PDUY Feb 21 at 15:27

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