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Is there a way to replace Null Value in Model Builder?

JessicaRutherford2

I am looking for a way to replace Null Values (-9999) with a set value in Model Builder. I have extracted values to points and want to replace the Null values with a set value. I have tried an iterator but that doesn't seem to work. With raster image I used Is Null and Con Null tool to replace the value. I am not to sure if this is possible for extract values from points. When I do this manually I go through edit mode and do a find and replace. But this is not work for Model Builder.

I was wondering if there is a script I could use or a way around this issue.

I need to replace the -9999 values with -13.54.

If anyone has any ideas, that would be great.

Thank

Jess

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JessicaRutherford2

Hello again Dan

This is not working for me. It seems that I can not connect my 'values to point' layer to the 'select layer by attribute'. Is there a step in here that I am missing?

It just will not allow my to connect the output slide area values to points to the tool. See below

I am not sure what else to try here.

Suggestions?

Thanks

Jess

DanPatterson_Retired

select layer by attribute tool

calculate field tool

pretty well most of the menu functionality that is important has a tool equivalent, specifically so that one can emulate workflows in python scripts and/or modelbuilder... you just have to dig a bit

JessicaRutherford2

Hi Dan

My data in saved to a geodatabase. I am not too sure what you are referring in your comment above. Are these in the Model Only Tools? I understand that this can be done manually in ArcMap, but I don't understand how to do this in Model Builder. Would you be able to elaborate on this more, please?

Thanks

Jess

DanPatterson_Retired

If the -9999 is in a field in a featureclass table, you can combine a select by attribute to select those records in that field that equal -9999 then do a field calculate setting those records to ... None ... no quotes or another numeric value like ... -13.54

If it is a shapefile, then don't support <null> and you are stuck with that value, but you can change it to another numeric value

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