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I have mapfile MAP NAME "MapChiTieuDau" EXTENT 779275 2222000 788430 2233835 SIZE 800 800 UNITS dd STATUS ON IMAGETYPE PNG SHAPEPATH "/ms4w/apps/openlayers-3.8.2/DuLieuBachLongVy/Maps" IMAGECOLOR 190 232 255 FONTSET...

I have a GeoTiff raster image filled with "1" and "0". I need to create a point shapefile that will contain points only over "1" values of raster. أكثر...

I have a postgis pointlayer in EPSG:3857, added to a project that is set up with OTF ON to project everything (other layers) to EPSG:3857. In postgis, I defined a view to dynamically create a buffer around the points, with a radius defined by an attribute: CREATE VIEW point_buffer AS...

I am a complete newbie to GIS. I am trying to download topographic data from a website that displays a map that can be zoomed in and out. The website is setup with: This application is using ArcGIS API for Flex version 2.3.1. Build date 2011-04-26. I don't understand how the...

I have a large topo map, made up of vector data from multiple shape files. How can I add unique names to each individual lake?I can work in ArcGIS, ArcMap, ArcCatalog or QGIS أكثر...

Had search the net but can't seem to find a function for this, have to ask in this forum to see if this is feasible? I have the following data in my columns in my postgis table: Boundary geometry Centroid geometry Length Shape Area Shape How do you create a polygon shape based on the column...

I'm learning python and I'm also learning GIS (QGIS to be exact). What I'm trying to do is use the python console in QGIS to practice and get comfortable with python. Tutorials that I have found are pretty straightforward. Moving forward, I'm looking at creating a package and calling that...

For a region that is quite familiar with snow, it was still a storm for the history books. أكثر...

I'm trying to add popups for point icons using Leaflet.js and ran into this error: "Uncaught TypeError: points.eachLayer is not a function" Here's my code: function addPoints(data){ for (var feature in data.features){ if(data.features[feature].properties.activity == "hunting"){...

I have published an Image service with ArcGIS Server 10, containing the results of an interpolation operation. The Image which is returned from the service is in greyscale. I wish to render it with a stretched color ramp, with the following properties: The RestEnd Point API, mentions that a...

I'm new to python and arcpy but I've been trying to learn how to run geoprocessing tools using arcpy. I have (for this example) 2 shapefiles, a and b, which are both polygons. From plotting them in arcMap, I know that b is found entirely within a. I would like to write a script that will take...

This question already has an answer here: Adding Layerfiles (.lyr) to QGIS? 1 answer would anyone happen to know how to open .lyr files in QGIS without having access to ArcGIS? Is there some sort of a...

I'm using GostGIS when I enter following you can see the input point is transformed: =# SELECT ST_ASEWKT(ST_GeographyFromText('POINT(-33.7832527413259 151.120353207011)')); NOTICE: Coordinate values were coerced into range [-180 -90, 180 90] for...

This part of my tool is giving me issues.I want to create a new feature class based on the user's input workspace, then generate a new point feature within that feature class based on the user's input XY coordinates. So far this is what I have.My script tool calls for the input DEM (Parameter...

I have an ESRI GRID file projected in MODIS-Sphere (here's the dataset http://urban.yale.edu/sites/default/files/data/setoguneralphutyra_uf.zip) that I need to convert to a WGS84 GeoTIFF. I tried Raster > Projections > Warp (Reproject) and got this nonsense: I then thought I'd use the MODIS...

I hope that this is the right Stack Exchange for this question. I may be oversimplifying this, but I'm looking for verification in my understanding of the following: If I have a spatial dataset in 2 different data [datums], the coordinates [absolute location] of the "same" point may differ...

New to SE, needed to reformat my other question. Basically I'm looking at reading a CSV with longitude and latitude points (in this case housing exposure, simplified below): HUC4,Longitude,Latitude1204,-95.956,30.051204,-95.955,30.048And I would like to create a grid for each point in the form...

I have a series of points with various fields in the attribute table such as car_id, time etc., I've created a hexagon vector grid, I want to count how many unique car_id's occur in one of the hexagon polygons. Essentially a step further than points in polygon, if there are multiple points in...

I am using a Python script tool within an ArcToolbox in ArcGIS 10.2. The script calls another python script tool while running but does not display the messages from the called script when using the arcpy.AddMessage() method. Example: scribtbox (ArcToolbox)two script tools script1...

Experts at RSPO's annual conference shared ways to help farmers increase their productivity while reducing environmental impact. أكثر...