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linear interpolation between wind speed contours

kathy71jones

I have created wind speed contours from wind speeds estimated by processing weather station data. I would like to generate rasters with values that are interpolated linearly between these contours. What I can find in the ArcGIS Pro toolbox is the Topo to Raster tool that is specific to the characteristics of topographic data and does not seem to linearly interpolate. What am I missing?

Thanks for your help.
Kathy

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kathy71jones

Mark, the document you linked
https://www.contracosta.ca.gov/DocumentCenter/View/3912/Verification-of-the-District-Standards-11-07-2011-PDF?bidId=
is primarily about rainfall distribution curves. I didn't see anything
about maps with precip contours. But Appendix C is blank.
Is there a different document about that?
Thanks, Kathy

MarkBoucher

Kathy,

Sorry. By "train" I meant that after I create the raster from contours and then create the contours at smaller intervals, I see if the newly created contours make sense. If not, then I add intermediate contours and repeat the process. This adding of additional intermediate contours is what I call "training". If you look a the document I linked, you will see some maps with circled areas that I felt I needed to add more intermediate contours to "train" the raster to output more reasonable contours.

Hope this makes sense...

Mark

kathy71jones

Hi Mark, I'm not sure I understand. How do you train rasters?
Ultimately what I want is a raster field with values obtained by linear
interpolation from my contours.
Kathy

MarkBoucher

If you can create a raster from your contours, you can create contours at any interval from that raster. What I did was create supplemental contours by manually interpolating halfway between the starting contours to train the raster to create contours that I agreed with. So there was still some subjectivity involved. - Mark

MarkBoucher

Kathy,

I did something similar for rainfall contours using ArcMap and Spatial Analyst. I documented it here.

https://www.contracosta.ca.gov/DocumentCenter/View/3914/Mean-Seasonal-Precipitation-Raster-From-Dwg-B-166-PDF?bidId=

It was a while ago, but after looking at the document, I now recall I made a raster from the manually created (digitized) contours, from the raster generated finer contours, checked the accuracy of those finer (smaller interval) contours. Then I manually interpolated between the initial manual contours where needed by creating lines between the initial contours and then drawing new contours by clicking the midpoints of those lines. Tedious, but it worked.

Possibly what you need is somewhere in that process. ArcPro may have a simpler tool.

Mark

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