I ran a small piece of code, testing the rsaga.pisr function for calculation of potential solar radiation.
- Question is: if I calculate the rsaga.pisr for April 1th till April 4th, day by day, sum those and compare it with the rsaga.pisr calculated for the range of days April 1-4th, there is an unexpected difference ranging from (4.821417, 6.996113)kWh/m2. Can you help me to fix or explain this?
- Second question is a technical one: when the R script calls rsaga.pisr I can not have the SAGA gui opened since it crashes down. Is that expected?
- Considering the latitude=user defined, why do we need it since the latitude grid is defined?
- And finally, there is a comment concerning the units in the rsaga.pisr when you chose kJ/m2. If I'm not mistaken, the resulting grid is actually in MJ/m2.
Thank you for the help and a nice tools that we can all use and benefit from it.
Regards,
Melita Percec Tadic
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