single precision data for griddata()

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roudan 2018-4-16

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https://ww2.mathworks.cn/matlabcentral/answers/395356-single-precision-data-for-griddata

评论： Guillaume 2019-9-20

Hi

when I use griddata(x,y,v, xq,yq), x,y,v,xq,yq are all single-precision data to save the memory. but there is an error saying " the input points must be a double array.

However when I checked the online manual for griddata(). it says x,y,z, can be single or double https://www.mathworks.com/help/matlab/ref/griddata.html

So I am wondering how I can use single-precision data in griddata()?

Thanks

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roudan 2018-4-16

Thanks Guilaumn.

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Answer 1

Guillaume 2018-4-16

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https://ww2.mathworks.cn/matlabcentral/answers/395356-single-precision-data-for-griddata#answer_315467

Yes, it looks like an implementation bug or a documentation bug. The fault lies with scatteredInterpolant which is called by griddata. The doc says that scatteredInterpolant accepts single arrays when it clearly doesn't.

This is worthy a bug report to Mathworks.

It looks like you're out of luck, you can't use singles with griddata.