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I have a dynamic Layer created by joining LayerDataSource and QueryDatasource. Everything seems to be OK, it has correct attributes and values. But when I try to apply ClassBreaksRenderer the default symbol parameter is not working at all. I mean, polygons with values that are defined with class...

I am building a relatively simple python tool for ArcGIS 10.3 which will automate the process of generating summary statistics for multiple raster datasets, for polygons in a polygon dataset, using ESRI's Zonal Statistics tool. The key component of the tool is a multi-column value table that...

I have two different date of Landsat image.I want to do change detection using image regression method.Is it possible to do image regression in Erdas Imagine or ARCGIS? How can I develop a model for image regression analysis in ERDAS like image rationing and image differencing? أكثر...

I am working with MODIS Terra imagery (MOD13Q1). I am currently trying to compute the autocorrelation structure of the pixels in an MODIS NDVI raster. The problem is that I have clipped the original MODIS raster to focus on certain regions of interest (ROI). This means the MODIS raster has...

i don know if this is the right place to publish this.i am working with business object tool traying to make a kml file to be imported on google maps. I dont know much about geographic systems, but i begin to understand some basic thinks, well, i have a database which give me a local...

I have an application where the user draws a path (a series of connected straight lines) and this path may not intersect any feature in a particular GeoJSON layer. I need to check that no point along these lines intersect the GeoJSON layer, not just the endpoints. How can I perform this check...

I am playing with mapnik and trying to export multiple vector files as one pdf with multiple layers. For the moment, my vectors get merged when rendering. Is there a way to keep each vector in a separate layer of my rendered pdf? أكثر...

I am using LIDAR asc files to generate a large storm water catchment area which I would like to then combine with some survey work including river Bathymetry to actually combine the data to have one complete surface file so we can complete a flooding model of our at risk coastal foreshore...

I am new to GeoServer. Could you help me to implement WFS request in GeoServer? أكثر...

I have a vector layer in OpenLayers. It has some attributes like left, right, top, bottom, etc.I want every feature to be multi-label (to have more than one label). The javascript code is as follows: style = new OpenLayers.Style();rule = new OpenLayers.Rule({ filter: new...

Is there any diagrammer tool available (similar to ArcGIS Diagrammer) for QGIS? أكثر...

This is a pretty general question. I just wondering what tips and tricks GIS programmers have used to speed up arcpy scripts that you import into the toolbox and run. I work most everyday writing little scripts to help non-GIS users at my office process GIS data. I have found that ArcGIS 10.0...

This question already has an answer here: Setting value of field in all selected rows of table using ArcGIS Desktop? 1 answer We've recently started working with ArcMap, having used MapInfo previously...

I have an attribute table in ArcGIS 10 (it's large - around 300,000 elements). I've selected some rows of the table using 'Select by attributes' and I want to set the value of a field for all of those rows. How should I go about doing this? I'm hoping there will be a nice, easy, GUI-based way...

Georgia URISA’s 25th Anniversary Celebration Event Date:Georgia URISA’s 25th Anniversary Celebration December 3rd, 2015 from 7:00pm-10:00pm Location: Red Brick Brewery 2323 Defoor Hills Road NW Atlanta, GA 30318 It’s the end of another successful year for the Georgia geospatial community, and...

This is a simple question but I am working on my first experiment with Maxent. I am using two different species. When I receive the output map and look at it in QGIS the values for suitable habitat probability do not sum to 1. Rather, they each sum to much less or much more. These are the two...

I tried select st_astext(geom) from table where st_pointn(geom, 1) = st_pointn(geom, 2)But I get some results which don't match the criteria. For example: LINESTRING(-117.1642086 34.2779308,-117.1642145 34.2779305) Why do I get the wrong answer for that query? (I have since changed my query...

I'm using javascript and Openlayers 3 and to draw shapes or geometry in osm map. The data is in geojson format and i want to store it in SQL server 2008 R2 using SQL geometry or spatial data types. Is there a way to convert GeoJSON Format into SQL geometry? أكثر...

Tree count management using remote sensing techniques is important for sustaining conservational stability and ecological biodiversity. The post Using Remote Sensing to Count Trees appeared first on GIS Lounge. أكثر...

Contributed by: Nathalie Smith Esri, Olympia, WA M 360-485-2371 Esri video highlights TNC work on Coastal Resilience and Ecosystem Adaptation leveraging the coastal resilience mapping portal and 3D GIS analysis. *Watch this...