casti

Linear trend has to pass through the origin

Discussion created by casti on Aug 14, 2012
Latest reply on Aug 16, 2012 by clthompson
Hi - I need to interpolate a linear trend surface through a really big number of points but with the condition that the surface has to pass exactly through one of them, like the origin point.
I couldn't find any option for that in the trend tool so I though about creating a lot of points really close to the origin point to force the trend but since I already have so many points I get an out of memory error.
Does someone know if there is another way of doing this? I am using python to perform this analysis so I though about converting the points to a numpy array but so far I haven't found anything in numpy to calculate the trend.
Thanks a lot for your help!

Jose Luis Serrano
GIS Programmer/Analyst

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