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(The following post and data visualization is by guest bloggers Patrick GIll, Robert Roig III, and Ryan WIlliams , highlighting their project for Prof. Harmon’s Economics service*learning class). This visualization depicts the prices for permit parking amongst rail station parking lots in...

I'm trying to use ogrinfo to get some details on a shapefile.Now, the only way that I know is using orginfo: ogrinfo -ro -so -al BRA_001.shpBut its display all information about the shape: INFO: Open of `.\BRA_001.shp' using driver `ESRI Shapefile' successful.Layer name: BRA_001Geometry...

some shapefiles have a .prj file associated with it. and the .prj file contains the projection info of the shapefile in the format of WKT. Sometimes I need to convert WKT to proj4 string, and sometimes I need to convert it back. Is there any ready-made library to do this? Thanks in advance...

QGIS – from a geodata viewer to a GIS platform by*Marco Hugentobler أكثر...

We are releasing a mobile app that needs to have boundary limits for submissions.Case scenario: User logs into our mobile appUser submits a caseIf user is outside a city boundary, mobile app will not allow them to submitIf user is inside a city boundary, mobile app will allow them to submit I...

I'm after a recommendation for a smartphone app (iPhone or Android) to log asset information for litter bins. I need the following features GPS geotagged photos Form with drop down menus for user definable attributes, e.g. construction material,classification, condition etc export to csv or...

Esri's tapestry market segmentation system breaks out the country into 67 market segments and six urbanization groups that reveal our mixed character. أكثر...

Esri story map shows Vision Zero's approach to data-driven decision making. أكثر...

Bonsoir à tous ! J'ai un petit problème. On m'a donné des coordonnées GPS à exploiter sur SIG mais impossible de déterminer si c'est du DMS (degré:seconde:minute) du DM (degré:minute) ou du DD (degré décimal). Dans le tableau excel que j'ai, les données prennent la forme suivante : X ...

I used the following command to import a bunch of raster to postgis out-db style (only pointers to the rasters are stored in the database): raster2pgsql -s {srid} -c -R -I -C -F -t auto {file_name} public.{table} | psql -h {host} -p {port} -d {database} -U {user} --no-passwordNow I want to...

I am interpolating air pollution values from 6 data locations using IDW in ArcGIS. I know that more the number of points, more reliable the results are. But, I am not sure if a minimal number of data points is necessary. I would really appreciate some information on this. أكثر...

Maintenance and management of solid waste disposal sites includes various tasks such as landfill inspection, reporting, planning and monitoring. Recent advancements in contemporary mapping technology enabled easier management of these activities, as we can see in various landfill management...

I am starting to set up PostgreSQL as a DBMS for ESRI SDE instances. I am looking for recommendations for setting up the roles/schemas for this. My architecture is: Virtual private server with Windows 2012 ESRI's ArcGIS for Server 10.3 installed on VPS ESRI's Web Adapter 10.3...

I am trying to create a model in ArcGIS that makes use of a DEM and other user-input parameters in order to calculate the evapotranspiration at a hydrological basin. To be exact, the final output of the whole process will be a raster that instead of height value will have evapotranspiration...

Whether you are coming to our website for the first time or are a regular consumer of our work, we hope our maps, data, stories, and photos are informative, insightful, and, occasionally, inspiring. If you’re one of the many organizations and institutions collaborating with us to expose harms...

ArcGIS Online imagery basemap was updated to include more recent global imagery, initial states of 2015 NAIP imagery, new contributor content, and additional imagery at the newly expanded largest map scales. The Arctic Imagery basemap was also updated. View this map tour to see areas of the map...

Sometimes, but not always, when I open an existing .mxd, the rulers and border (and shadow) are missing in layout view. All elements are there otherwise. When this happens, I am unable to export to either .emf or .pdf. I can't discern any rhyme or reason. These are data driven pages, in case...

I have downloaded some netCDF data from Tamsat and have successfully imported it into ArcGIS. However, I am getting no values when I used both the "Extract multi values to point" and the "Extract values to point" tools in Arctoolbox. Can anyone help me out? أكثر...

I am trying to perform a supervised classification with "i.maxlik". I have three bands: 1) elevation (a dem); 2) reflectance (derived from Landsat ETM+ band4); 3) cumulative solar radiation (derived using "r.sun"). I am using rock glacier outlines (polygonal vectors) as my region of interest...

I am attempting to do a join in QGIS between a SQL Server Spatial table and a non-spatial table (on a single integer field). I was able to add both successfully and make the join, but the query builder dialog only shows the fields from the spatial table. I also tried setting a feature filter...