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I have been creating some web-map applications using GoogleMaps Javascript API v3. I've been bringing in tiles from ArcGIS servers which is really easy using the API. The code below loads a sample dataset from ArcGIS.com. var url =...

Size comparison maps are very popular, and can be found all over social media. Are there any geographic mathematical principles which completely dispel them. Can we comfortably assert they are neither accurate nor precise or should I admit they have some legitimacy? Here is an example "Size...

gdalinfo documentation includes -json flag but using it returns "FAILURE: Unknown opt Reading the documentation for gdalinfo describes the option of formatting the output as JSON. -json Display the output in json format. However, when I use the -json tag it appears not to be...

I am using an update cursor in a script and need to make edits from arcpy.da.Editor. The error that is being thrown is a Runtime Error where the feature class cannot be opened. import arcpyimport GetSRConfigimport osdef GetThisDir(): import inspect return...

New-ish to GIS. Using Arc 10.3 and experiencing an annoying problem. When attempting to resize a neatline (in order to use it as a locator box on my inset reference map) the lines disappears when reduced in size too quickly, or after getting below ~0.6x0.6". The blue vertices remain visible...

I'm trying to parse a datetime field using python (but have never used python for it before). I have a field that contains a valid date, but not a valid time... and other fields that have valid hour and am/pm information. I need to grab the date (mm/dd/yy) from the datetime field and then...

I have a python script embedded within a modelbuilder tool. I want to set it up to accept as input, the output of one tool, a set of selected features (called "Contained Paths" in the image). The script tool itself is "OD Path Align Tool" In the script, I want to run these through a...

I'm working with script code in python (in ArcGIS) for some processes from raster layers, my code takes the raster files, create arrays of data(NumPyArray), manipulate the data and then creates a rater output with the results. My problem is, this process is very slow. I'm working with basins and...

I am writing a model that takes a polygon shapefile as input, converts it to polylines, explodes it to individual lines and finally applies a (tested) style, khLineLength1.qml, which labels each line with its length. Here is the log: Algorithm Polygon_Sides starting...Prepare algorithm...

I have the following VB code to produce a percentage in a field calculator. " [FIELD_1] / [Total]*100 " It works in VB. I've tried the following without luck. !FIELD_1! / !Total! * 100 Can anyone translate this VB code to python? أكثر...

I'm trying to obtain landscape metrics within a 1-km radius of nest locations using the SDMTools package in R. The code I'm using is modified from code provided at this link...

Are there any open source or inexpensive tools to detect and fill sinks on a DEM? ArcGIS Spatial Analyst is just out of my price range. أكثر...

How do I convert MapInfo TAB and/or MIF files to SHP using only free tools or ArcGIS itself? I've not had much luck trying to do this in the past and I don't want to have to shell out for the ArcGIS Data Interoperability extension which seems to be the 'official' way to go about this...

Clip it is tool to cut out a piece of one feature class using one or more of the features in another feature class as a cookie cutter. This is particularly useful for creating a new feature class. أكثر...

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I am having a fairly specific issue. I am starting off by creating 100m2 squares around specific points on a map by adding a buffer to the point and then using this buffer as the extent for a Vector grid. This works fine in that it creates the squares as needed but when I export the shp files to...

I have a geodatabase and I'd like to return a value for NULL. (When I look at my raster layer, there are a lot of zeroes which I am assuming is because of the NULL values) My first question is:1) Is there a way to use the hstore_get_value() to map NULL to some value? I already am using the...

The last post with the focus on recent data for your work when it comes to DSMs or DEMs was a bit early honestly. I was working with the ALOS Global Digital Surface Model “ALOS World 3D – 30m” and I was comparing this with the SRTM 1 dataset for my beloved Kharkhorin area in Central Mongolia. So...

Smoke continues to pour from fires in Sumatra. أكثر...

I have made a mosaic of several old orthoimages. If it's possible, I'd like to do two things with the mosaic. First item is to remove the edges of the smaller rasters that show up in the mosaic, so that the mosaic is more continuous looking. The edges show up as black strips and kind of break...