multiple shapefiles from create random points

JacobGjesdahl

Hello, I'm trying to run a model that will make viewsheds for almost 4000 points and then make a table of areas in different land uses within each viewshed (each point is a row in this final table).  I have the model all built and working fine for one point, but I don't know how to "split" the rows of the input table into new shapefiles.  To start with I have a polygon file of lots and I want to assign a random point to each polygon.  However, when I tried to go into properties and change it to a list of values, the result was the same - lots of points within one shapefile, when what I want is almost 4000 shapefiles each containing one point.  I see two possible solutions to this: where I get the tool to recognize the shapefile as multiple inputs rather than 1 input, or where I first split the shapefile into 4000 shapefiles, then run the tool with a list input.  However, I think the list input only allows 50 inputs, so it seems like the first option would be the way.

Sorry if this is an obvious question (or conversely impossible to understand), I'm fairly new to model builder.

Thanks,
Jacob Gjesdahl

curtvprice

Chris is right, your syntax is messing things up. The error message is because python is not recognizing your variables as raster layers but just as garden-variety strings.

To get this to work, you must rename your model element names to remove the percent symbols (right click / rename). They were automatically named that way as you were creating them, I know, but ModelBuilder gets very confused  when percents are used in the model element names, since model variables are used as model element names surrounded by percent symbols.

Then, in Raster Calculator, you can make a more sane expression using the raster layers listed in the upper left corner -- something like:

Con( (("value_be2" == 0) & ("value_hh" == 0) & ("value_no" == 1)) |     (("value_no" == 1) & ("value_be" == 1) & ("value_hh" == 1)), 1, 0)

I can simplify your expression, too:

Con( "value_no" == 1 &      ((("value_be2" == 0) & ("value_hh" == 0)) |     (("value_be" == 1) & ("value_hh" == 1))), 1, 0)