Difference between revisions of "R.sun"

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(Testing: addon template)
(Time step: +pics)
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=== Time step ===
 
=== Time step ===
  
The following three images demonstrate the effects of using different ''step'' parameters.
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The following three images demonstrate the effects of using different time '''step''' parameters.
  
 +
r.sun -s elevin="gauss" glob_rad="rad.global.30minT" day=180
 +
 +
[[File:Gauss_30min.png|400px|thumb|center|Default 30 minute time step over a Gaussian mound.]]
  
r.sun -s elevin="gauss" glob_rad="rad.global.30minT" day=180
 
  
 
  r.sun -s elevin="gauss" glob_rad="rad.global.15minT" day=180
 
  r.sun -s elevin="gauss" glob_rad="rad.global.15minT" day=180
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 +
[[File:Gauss_15min.png|400px|thumb|center|15 minute time step over a Gaussian mound.]]
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  r.sun -s elevin="gauss" glob_rad="rad.global.03minT" day=180
 
  r.sun -s elevin="gauss" glob_rad="rad.global.03minT" day=180
  
 +
[[File:Gauss_03min.png|400px|thumb|center|3 minute time step over a Gaussian mound.]]
  
Default 30 minute time step.
 
 
15 minute time step.
 
  
3 minute time step.
 
  
  
 
The 3 minute time step takes roughly ten times as long to run as the 30 minute timestep.
 
The 3 minute time step takes roughly ten times as long to run as the 30 minute timestep.

Revision as of 02:54, 19 May 2009

r.sun

Help page

Tips

Testing

Create an artificial surface containing a Gaussian mound:

r.surf.volcano out=gauss method=gaussian kurtosis=1

Time step

The following three images demonstrate the effects of using different time step parameters.

r.sun -s elevin="gauss" glob_rad="rad.global.30minT" day=180
Default 30 minute time step over a Gaussian mound.


r.sun -s elevin="gauss" glob_rad="rad.global.15minT" day=180
15 minute time step over a Gaussian mound.


r.sun -s elevin="gauss" glob_rad="rad.global.03minT" day=180
3 minute time step over a Gaussian mound.



The 3 minute time step takes roughly ten times as long to run as the 30 minute timestep.