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while trying to classify landsat images, I get the following problem: I click on the pixel I want to define a ROI, but the ROI polygon that the plugin creates appears in a different part of the image instead of appearing over the selected pixel...The pink arrow shows the pixel I clicked to...

I've already seen Error loading plugin photo2shape even after installing exifread module and Error installing Photo2Shape QGIS 2.6 for Mac, and other forums, but can´t make it work. First I installed pip, and then went to c:\python27\scripts and typed "pip install exifread", and it got...

I'm trying to iterate through a feature class and select each feature one by one by using the OBJECTID field. When I use a single value, the SelectLayerByAttribute works, but how do I compare the OBJEECTID to a variable that increases in count through the loop. The program is then suppose to...

I have a lot of Photos with lat, long, and altitude information.When I start the import, I get an error message. Do I need to prepare a blank point layer before importing?Is there another python plugin that is required? I have had some Gis training, but am not a programmer.I use win7 and...

This question already has an answer here: How do I load OSM vector data in QGIS 2.x? 4 answers I'm attempting to use OSM data in QGIS 2.8.2. I've imported my data into SpatiaLite layers using the...

I have recently installed QGIS 2.8 and Oracle 11.2 Client on Linux Red Hat 7. Everything was fine, I am able to access Oracle database, as well as running QGIS. Unlike QGIS 2.8 from WIndows, Linux version does not have Add Oracle spatial layers and Oracle new connection icons.I think the Oracle...

I installed version 2.0 using the recommended mac installer (http://www.kyngchaos.com/software/qgis), and the installation went fine, but there is no option to add an oracle spatial layer (not in the layer dropdown, or the sidebar buttons). I assume this has to do with gdal configuration, but...

Bonjour, j'ai un problème de géoréférencement avec un shapefile. J'ai crée un shapefile polyligne dans un projet .mxd sans géodatabase pour réaliser une carte. Je lui ai attribué un système de coordonées WGS 84 projeté. J'ai ensuite crée une géodatabase pour un autre projet, et j'ai voulu...

This visualization uses data from the U.S. Census Bureau’s*2013 Annual Survey of Public Pensions State-Administered Defined Benefit Pensions Systems downloaded from American FactFinder. The thematic map indicates the ratio of pension obligations to each state’s total cash and investment holdings...

Although GeoCurrents focuses mainly on contemporary issues, long-time readers know that I also have a strong interest in the deeper reaches of human history, and that I have been involved in intellectual controversies related to the origin and spread of the Indo-European language family. The...

I am administering an ArcGIS Online Organizational account and am newer to this side of ArcGIS Online. I am trying to create a map with pop-ups that contain different images for different points, attachments (such as reports) and URLs. The Help section on ArcGIS unfortunately did not provide me...

I have about 10 polygons, and I have added their centroids to the map. I want to create lines connecting the centroids of each adjacent polygon. If polygon 1 borders polygon 2 and 3, I would like a line going from 1 to 2 and from 1 to 3. Hopefully this makes sense, and someone can help me out...

we want to replace our shapefiles with postgis layers for editing in QGIS. We plan to edit 1 Layer with 5 people at the same time is this possible? Is this a good idea or is there a better practice to do it? What would be a good backup strategy? Is there something like versioning for...

I'm in the processes of learning python and am stuck on an exercise. One part of the exercise requires me to union a polygon from one gdb with a polygon in another gdb. Here is what I have, which isn't working: arcpy.Union_analysis(in_features="polygonA #;polygonB...

I am facing a strange issue when trying to execute GP service when my map's spatial-reference is Web Mercator. I appreciate all help. I have a JavaScript API application. Initially I only had my map service used in this application. The Map Service I am using is in NAD27. I execute a GP...

This GeoSpatial Stream broadcast discusses location surveillance and how portals are providing cellphone locations as a paid service; the Global Road Map and its quest to limit environmental impact; Canada’s investment in a global survey of surface water; NATO’s Joint Intelligence, Surveillance...

Hello all, I've imported an IHS (297f) file into global mapper, and I'm attempting to export that to a new Esri File Geodatabase When the... أكثر...

I'd like to have a tool or quick python script to classify an existing number field to a new text field. For example I have a roads layer that has a type identifier as a coded number and I would like to create a new field that described the number code as text. So say the existing field...

A similar question has already been asked but the solutions don't resolve this version. The feature contained in a geodatabase is larger than 2GB as an exported shapefile. I need to run an extract function in R to attribute the polygons with data from a raster file. Exporting the feature as a...

I am looking for raster data for maximum temperature, ideally on a state by state basis (US) to make the file sizes smaller. Data would need to be weekly or daily going back to at least 2010. I think NOAA has something like this, but I found their website hard to navigate. Could someone point me...