Latest Contributions by WadeGivens

Stinking preconditions, get me everytime.... Thanks so much for your help Curtis ... View more

You were right, meant Calculate values 🙂 The reference for the string slicing is a good nugget to have.  I Can never keep straight of when to use the colon. I'm attaching a screenshot of the part of the model where I'm trying to implement the Calculate Value.  I specified a .tif image and parse the the path to get the file name (%Value%) to carry off for further processing.  In the Calculate Base Fiel Name I put the following code in the Expression line only (expression.png): r"%Value%"[:-8] [ATTACH=CONFIG]13606[/ATTACH] The output value for basename is in the screenshot (model_snippet.png).  I'm expecting the value to be "dinsdale_b1" Should the line of code be encapsulated with f() ? [ATTACH=CONFIG]13605[/ATTACH] ... View more

Thanks for the replies guys.  Adding the precondition in that spot did the trick Shitij. Curtis, I'm using the Parse path tool extensively and it's pretty slick.  The problem I'm running in to is that I'm generating individual clipped raster files for a list shapefiles (bnd1_raster, bnd2_raster, etc.).  Due to some downstream processing, my rasters end up with names like bnd1_raster_tpi, bnd2_raster_tpi, etc.  I need to clip these again by the perspective shapefile feature.  Was thinking that using calculate field on %Value% (%Value% = bnd1_raster_tpi) and stripping the "_raster_tpi" and adding ".shp" would be the easiest way to specify the right shapefile to clip by in each iteration. I know this would be MUCH easier if I would just script it in Python, but now the Calculate Field tool is gettign the best of me and I can't have that happen... 🙂 Wade ... View more

Thanks for the references!  Will start digging into them. In the interest of making it a bit more universal for future use, would the following remove the last 4 characters from a string stored in %Value% ? Using Calculate Field Expression: f(r"%Value%") Code Block: def f(Value):   import os   return Value[-4] Data type set as String ... View more

In ModelBuilder 10.x you can access this value from the feature layer output for the iterator using the Get Field Value tool. The output of that tool will be the value (say, %Name%) you can use in the output file name. Another approach I've used is include the OID and name field in the iterator - then you can parse the value out of the iterator label element using the Calculate Value tool. For example on an iteration the iterator label element may be "1_Foo", you can then use Calculate Value to get the value using this expression: r"%Value%".split("_")[1] the above expression returns "Foo" if Value is "1_Foo". Curtis: Can you point me to some documentation, or examples of the expression syntax similar to that above.  I'm wanting to do something similar but strip off the last 4 characters of %Value%.  So if %Value% = raster.tif, I want to use %Value% plus an expression to get raster.shp Thanks! Wade ... View more

That's what I started out using, but since the rasters I am processing are geoTIFF's, the Name variable gives me the file name plus the .tif extension.  When using %Name% for raster.tif in my results (%Name%_result.tif) I end up with raster.tif_result.tif.  I need to drop the .tif extension because the multiple .tif's in the resulting filenames are causing me headaches downstream. Thanks for the suggestion though, Wade ... View more

That works perfectly.  Now if I could only do this based on unique to each raster, quantile classification.... ... View more

Here is an example that may help: fc = "fishnet" rows = arcpy.UpdateCursor(fc) for row in rows:     geom = row.shape     row.LowerX = geom.extent.XMin     row.UpperX = geom.extent.XMax     row.LowerY = geom.extent.YMin     row.UpperY = geom.extent.YMax     rows.updateRow(row) del row, rows Thanks a bunch!  Worked like a charm! ... View more

Hi Wade, one way you could go is with field calculator: 1. create fields for centroidX/centroidY of the grids, calculate geometry for them. 2. create fields for UpperY, LowerY, LeftX, RightX in field calculator you can then calculate each field: UpperY = centroidY + (gridheight*0.5) LowerY = centroidY - (gridheight*0.5) LeftX = centroidX - (gridwidth*0.5) RightX = centroidX + (gridwidth*0.5) Thought about doing something similar to this after the first reply, but a little worried as to what the results would be if I want them in decimal degrees.  Going to try the python code above first after my computer finishes up its processing task. Thanks! ... View more

I insert many rasters into my Arc projects daily and by default the color rmap is always black to white. I have to manually change to a more 'elevation-friendly' color ramp consisting of earthy colors. In the style manager window I am unable to perform any changes to the ESRI.style list of styles. The only option I can can choose is to right click on a style and click copy. If I could just manually change the black to white color ramp to the elevation color ramp I would be good but it's not letting me. Any ideas? If not in the Style window, where else can I change this? Thanks, James Ever get an answer to this? ... View more

It's designed to limit the color ramps shown depending on category. Category is an attribute you can edit so you can change it for color ramps you want to show up. To edit the category of a color ramp do this: 1. Open the Styyle Manager (Customize menu > Style Manager) 2. In the Style Manager find the Color ramp folder in your style in the left hand pane and click on it to open it 3. In the right hand pane find the color ramp you want to show. Make sure you have the style view set to show details. 4. In the Category column click on the category text next to your color ramp to put the text into edit mode. 5. Change the text to Default Ramps OK out of the dialogs and you should see your ramp in the layer symbology dialog dropdown now Is there a way to make this the default color ramp used instead of the black/white color ramp? ... View more