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I am trying to control the layer order between a cartoDB layer and a Google FusionTables layer, on a google base map. The CartoDB layer always displays underneath, whereas i want it on top. I have found methods to order layers within Google, or within CartoDB, but not how to order them with...

I am using the ArcGIS API for JavaScript to build a web application. Within the web app a geoprocessing service is executed which requires an input that is user dependent. I thought of a text box where the user can enter a value, which should then be read by the application and used for the...

This is the first time I have an error and I don't know what it means. Can anyone out there tell me what should I do ? Thanks I am using ArcGIS 10.2.2 on PC. أكثر...

I have a shapefile and a table which I import both of them to PostGIS. With pgAdminII I am able to manipulate the table, join to shapefile and calculate new fields. When I try to do that with python inside QGIS I get no success. Example: uri = QgsDataSourceURI()...

Here is my problem: First of all you have to know that I have ArcMap 10.1 SP1. My features are stored in Oracle 11g database in SDO_GEOMETRY format. I have imported a layer of accidents location in ArcMap. So when I try to select all features included in a polygon (using the Select by...

I am trying to export a Postgis database table into KML using ogr2ogr. When I execute this command in terminal (Ubuntu 12) I just get the "documentation" back but no result or error: ogr2ogr -f "KML" mykml.kml PG:"host=localhost user=**** dbname=nga_test password=***" "public.chalandri"...

I've tried changing GCS and PCS multiple ways but can't seem to figure out how to get the Near (from Proximity tools) to output the Near_DIST in feet. All it outputs is what looks like decimal degrees. Here is my data: Data frame: NAD_1983_StatePlane_Texas_North_FIPS_4201_Feet Input...

I have generated a near table using ArcToolbox, and there are 50 points in two datasets. The feature ID for input and near are quite bigger than normal, as the left one in the enclosed picture. I have no idea why the FID is so big and how to correct it. أكثر...

I have a database - PostgreSQL, that I administrate using pgadmin. I have a trigger function: CREATE OR REPLACE FUNCTION household.before_b_member() RETURNS trigger AS $BODY$DECLARE duplicate integer; BEGIN RAISE NOTICE 'trigger start'; IF TG_OP = 'INSERT' or TG_OP = 'UPDATE' THEN IF...

So I'm making a vector file this way: OGRSFDriverH hDriver=OGRGetDriverByName("KML"); OGRDataSourceH hDS=NULL; hDS = OGR_Dr_CreateDataSource (hDriver, fname_dst, NULL); //I add layers OGR_DS_Destroy(hDS); and it bears no errors. Even on qGIS it opens correctly. Later, when I try to open it...

I find it quite practical to work with leaflet Polygon and it would be great to be able to build such objects directly from GeoJSON content. I did not find any Polygon constructor taking neither a GeoJSON object nor a GeoJSON string as input. Is there some method to build a leaflet polygon...

How does one add a table to the current map in ArcMap 10.0? 10.1 has the function arcpy.mapping.AddTableView, but this function does not exist in earlier versions. Must the table be made into a layer in some way? That (a) seems like it would be strange and (b) didn't work when I attempted...

Before I spend time writing something, does anybody know of any open source tools to perform swept-path analysis (preferably suitable to run on Windows and a Python API would be a bonus)? I pretty sure I can figure it out, but I'd rather not re-invent the wheel if I don't have to. Thanks...

I've got a Google Earth .kmz file opened in my copy of Google Earth 6.0.1.2032 running on Mac OS X 10.6.7. There are about 5000 points/"places" in the file and they show up fine. What I would like to do is create folders in Google Earth for those points to categorise them. Unfortunately, I...

How would you explain to fellow educators, to students, parents, or the general public why Geographic Information Systems (GIS) matters in education and in society? *One idea is to start with a document entitled “Why Maps Matter“. While spatial thinking is much more than “maps”, I aimed at a...

By Carsen Mata Family Dollar is one of the largest companies participating in this year’s Battle of the Buildings competition. Pictured here: A Family Dollar store at Fulton Street and Franklin Avenue in Brooklyn. The Environmental Protection Agency and ENERGY STAR are winding down...

By James Woolford December 11 marks the 35th anniversary of the Comprehensive Environmental Response, Compensation and Liability Act—better known as Superfund—that President Jimmy Carter signed into law in 1980. Anniversaries are good occasions to look back on what’s been accomplished. For...

I would like to change the background colour of a QGIS project using python. I can change the colour using the GUI via the Project Properties dialog: However, I cannot find the equivalent setting in the Python API. أكثر...

I am working with some Landsat 8 images from the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center. I am processing the images in R, and after masking the clouds, I want to project from the following CRS "+proj=utm +zone=12 +datum=WGS84 +units=m +no_defs...

I'm trying to alter my data on cartodb map to get maritime emissions over about 20 years- by country. Hence trying get a torque map for polygons, and by changing polygons to points based on a previous suggestion: SELECT ST_Centroid(the_geom) the_geom, carto_date FROM...