Raster calculator syntax in ArcGIS

Question

I'm trying to apply this equation through the raster calculator in ArcGIS:

I'm using this syntax:

( ( ( (Raster) ^ 4 ) - (1-e) * ( Sky T ^ 4 ) ) / e ) ^ 0.25

The raster calculator create a raster with no values

I'm doing something bad?

gis.stackexchange.com/questions/264698/…
– FelixIP
Commented Dec 21, 2017 at 18:28 — FelixIP, Commented Dec 21, 2017 at 18:28

user2856 · Accepted Answer · 2017-12-21 22:13:10Z

4

** is the power operator not ^.

((((Raster) ** 4) - (1-e) * (SkyT ** 4)) / e) ** 0.25

answered Dec 21, 2017 at 22:13

user2856

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ahmadhanb · Accepted Answer · 2017-12-22 01:45:07Z

4

I am surprised that you can get it even to process at all.

I assume Tr, E, and Tsky are rasters. Try:

Power(((Power("RASNAME",4) - (1 - "RASNAME2") * Power("RASNAME3",4)) / "RASNAME2"),0.25)

ahmadhanb

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answered Dec 21, 2017 at 20:08

D_C

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Haha thanks, E and Tsky are not rasters, is possible to use ** as power?
– Juan Cordoba
Commented Dec 21, 2017 at 20:14
give it a whirl and find out :)
– D_C
Commented Dec 21, 2017 at 20:18

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2 Answers 2