[GRASS-user] Rainfall interpolation for a time series

2011-08-15 Thread Hanlie Pretorius
Hi, I have rainfall measurements from 6 gauges that I want to interpolate to an areal value (a 'surface'), so that I can compare the the interpolated gauge values to a satellite rainfall estimate that covers a grid cell of 28kmx28km. Two of the gauges are outside, but close to the border of the

Re: [GRASS-user] Rainfall interpolation for a time series

2011-08-15 Thread Nick Jachowski
Hi Hanlie, I've this before with 11 gauge stations, also using TRMM data. You'll probably want to write a script and use r.mask to mask the interpolation map to your grid cell, then do r.sum on your masked area. After that just divide by the area to get the average rainfall. Given the small area

Re: [GRASS-user] Rainfall interpolation for a time series

2011-08-15 Thread Hanlie Pretorius
Hi Nick, Thanks for the reply. Did you do your comparison with a time series as well? If so, do you perhaps have the start of a script that you would be willing to share? Thanks Hanlie 2011/8/15, Nick Jachowski njachow...@gmail.com: Hi Hanlie, I've this before with 11 gauge stations, also