1
vote
0answers
30 views

Removing points outside of standard distance circle in ArcGIS for Desktop?

I have a feature class of companies where each may have multiple locations (for example, company A may have a cluster of points associated with it). For each company, I used the Standard Distance tool ...
0
votes
0answers
8 views

GRASS 7.3 r.fill.dir Does Not Create Output Raster

I am running GRASS 7.3 on Mac OS X El Capitan (2.9GHz, 8GB RAM). I have had to disable SIP in order to run it, but it works. I am hoping to perform some hydrological analyses on a few DEMs. My DEMs ...
3
votes
1answer
31 views

How to set up Python/ArcPy with ArcGIS Pro 1.3

My ArcGIS Pro install recently updated from 1.2 to 1.3. In reading Python in ArcGIS Pro 1.3 I discovered that Esri have changed how ArcGIS Pro uses Python/ArcPy. Legacy: In ArcGIS Pro 1.0 ...
0
votes
0answers
13 views

Install unstable Qgis-master alongside release version [duplicate]

Good day I have the release version of Qgis (2.16) installed into Mint and it can be updated just with apt install qgis whenever a notification comes out that a new version is released. I want to ...
0
votes
2answers
40 views

Is it possible to import a Shapefile from Manifold into QGIS with the same projection?

is it possible to import a shapefiles from manifold to Qgis with the same projection?
-2
votes
1answer
10 views

VS Reporting don't show [on hold]

i'm using VS 2015 comunity, all patches installed, i want to make a report using reporting tools for create a report rdlc but when i go to 'add new item' i cant see the report or templates, do i have ...
1
vote
1answer
50 views

how to join a road network into as few lines as possible?

I am processing a polyline file that contains multiple lines representing city roads. I would like to join the lines together into as few lines as possible. I've tried using the 'join multiple lines' ...
2
votes
1answer
33 views

Why do I get “Data source is invalid” error when calling method?

QGIS 2.14 on Windows 7. I'm trying to call a method in a python script from the QGIS python console. I've put the directory in which the scripts resides in the PYTHONPATH in both the windows system ...
2
votes
2answers
16 views

Correct syntax for loading virtualxl spatialite table?

I believe I have successfully loaded a virtual Excel table into a spatialite database using the SQL below - typed into the qspatialite plugin for QGIS. create VIRTUAL TABLE MyVirtualTable1 USING ...
0
votes
1answer
18 views

Direct access to DGPS data in QGIS?

I'm heading out to the Arctic Circle (Spitsbergen) I have a Sokkia DGPS and Magnet on a tablet device (connects to the DGPS and logs the data), they connect via blue tooth etc. Can I bring the data ...
7
votes
2answers
199 views

What's the meaning of numbers before an EPSG code, e.g. the 6.9 in EPSG:6.9:4326?

A WFS server I was using offered boundaries data in the following EPSG codes: EPSG:6.9:27700 EPSG:6.9:4326 ...defined in the XML giveCapabilities spec like this: <DefaultCRS>urn:ogc:def:crs:...
1
vote
1answer
35 views

Why is the legend symbol alignment in Print Composer worse than in the main window layer list?

I created a point layer where point-symbols' size depends on a column of the attribute table. When they appear in Layers Panel, symbols look like this (every circle's centroid has the same "X-value" ...
1
vote
0answers
18 views

Compare symbols in pyqgis

I'm working with renderers and I want to compare symbols from two different renderers. Is there any way to do it in pyqgis/python? Here is how I get symbols: renderer = layer.rendererV2() category = ...
2
votes
1answer
34 views

How to tell what co-ordinate system a WFS server is giving?

I got a GML file from an ArcGIS-based WFS server and converted it to GeoJSON using Ogre (online ogr2ogr), but then got very strange results from that GeoJSON file. Here's the link to the ...
0
votes
1answer
14 views

Geographic movement in c# [on hold]

I'm programming an game app by c#. I want to calculate movement of objects in app screen. For example I want to know if my object move from a source to destination (using their latitude and longitude) ...
1
vote
0answers
13 views

How to dynamically move a polygon in map canvas?

I would like to dynamically move a polygon on QGIS map canvas with a python script. The polygon coordinates are updated every n seconds in txt file by an outside application. I tried the following ...
-1
votes
1answer
39 views

Calculate Cumulative Distance (incorporating slope) of a Line Feature Using ArcGIS

In ArcMap, when creating a line feature class within a geodatabase, the length of each record is automatically derived upon creation. This length is based on a distance measurement for a planar ...
-1
votes
0answers
20 views

How to programmingly get the feature from a layer by the feature's ID in Python QGIS? [on hold]

I have get a list of polygon features' ID, I want to get the corresponding polygon features by these IDs in the layer, then if I want to do some calculations by using the polygon's geometry. How can I ...
0
votes
1answer
23 views

GeoDjango - faster way to use polygon.crosses?

I have a polygon and a line segment. I want to know if the line segment is both inside and outsize the polygon. Using "prepared" has helped but it's still no where near fast enough. how can i speed ...
0
votes
0answers
4 views

Infowindow with various information

I have a data file with columns of cities and their data For example, Mexico / Contents 1 / Address1 Mexico / Contents 2 / Address2 Rio de Janeiro / Contents 3 / Address3 Rio de Janeiro / Contents 4/...
2
votes
1answer
32 views

Calculating 3d polygons' surface area using ArcGIS for Desktop?

I've got a polygon feature class with Z values enabled. The polygon entities represent billboards. I'm looking for a way to measure the front surface area of this entities - i.e the area of the ...
1
vote
0answers
13 views

Converting 3d polygon feature class into MultiPatch feature class using ArcGIS for Desktop?

I've got a polygon feature class with z values enabled. The polygon entities represent billboards. I'm looking for a way to convert those polygons into MultiPatch feature class entities. I'm using ...
0
votes
0answers
10 views

Filling Colors for Some Countries in Carto

I imported the "world borders" from the data set library in Carto. I want to fill/highlight some countries (say United States, Africa and Europe) with the same color but not all countries. How can I ...
-3
votes
0answers
20 views

Research project on “carpooling recommendations” [on hold]

I am working on a research project on "carpooling recommendations". I want to simulate an environment where taxicabs with attributes (ID, current location of taxi ,number of passengers in taxi) will ...
1
vote
2answers
48 views

ogr2ogr keep geometry when converting to CSV?

Using ogr2ogr, how to keep the geometry when converting to CSV? ( Nothing relevant here: http://www.gdal.org/drv_csv.html ) $ ogr2ogr -f "CSV" MyLayer.csv MyLayer.geojson Here is the begin of ...
0
votes
0answers
7 views

to set map extent dynamically by mapserver-cgi request

Is there any way to set map extent (in map file) dynamically according to mapserver-cgi request? by runtime substitution ? regards
0
votes
0answers
23 views

Join attributes by location - QGIS

I am trying to perform an attributes join by location between a shapefile (with points) and a second shapefile (with polygons). The points are hydrometric gauges, whereas the polygons are catchments. ...
0
votes
0answers
14 views

problem in openlayers3 with mapserver-cgi

I want to form a map using mapserver-cgi. But it does not fit the basemap( OSM). msLayer = new ol.layer.Image({ source: new ol.source.ImageWMS({ url: 'http://localhost/...
0
votes
2answers
26 views

Summarizing point data to multi point data and creating convex hull in R

I have latitude and longitude information like 26.847905 73.9575005 for about 800 points, I need to trim these lat/lon information to say 3 decimal places. I used the following syntax in R # ...
0
votes
1answer
15 views

How to use gdal_calc.py for multi-band images?

My problem is that I have multi-band images (8 bands) in GEOTIFF format and I tried to use gdal_calc.py to calculate a conditional expression between those bands. However, I could not make it because ...
1
vote
0answers
18 views

calculate flow accumulation in a river with two outlet points

I'm trying to calculate flow accumulation layer (with arcGIS) in a basin with 2 outlet points. I have used "dem reconditioning" tool to modify my dem according to a vector layer, which contains my ...
0
votes
1answer
22 views

find or get map in openlayers

i want to know how to name maps, put an id or something to find it later on openlayers, for example: div id="map1"> div id="map2"> adition all code to set a map for fill it like: map1 = ...
0
votes
0answers
19 views

Calculating multiple text fields based on other fields in ArcGIS Pro?

I have an attribute table with two types of text fields (34 of each). One type attributes an "r" or a "d" for each feature. These fields represent the voting results in either presidential or ...
2
votes
1answer
27 views

Why does my reprojected globe visualisation not draw?

I have followed all of the instructions in QGIS Map Design, Graser and Peterson, Locate Press 2016, and cannot get the visual of the reprojected shapefiles clipped to Rome coordinates to draw as in ...
0
votes
0answers
14 views

Associating a specific location to the appropriate street centerline

I need to determine which street centerline within openstreetmap is the best match to a particular location triggered by capturing a location's lat/long via a mobile device. So far the best I could ...
0
votes
0answers
22 views

How do I connect my Python script external to the Grass GIS 7 program in Windows 10?

I've tried to find resources online to link and run my Python script externally from Grass GIS 7, however, I have not been successful. I found resources here that provide instructions (e.g., https://...
0
votes
0answers
16 views

Equivalent of “merge divided highways” in R

I want to make a map to print out based on openstreetmap data, and have successfully loaded the data into R, the programming language I'm most familiar with. To make things look nicer, I want to ...
0
votes
1answer
18 views

Dynamically adding controls onto MapBasic dialog?

I have seen a lot examples with dialog creation, like: Dialog Title "Title" Width 198 Height 52 Control Button Title "Обзор" Width 50 Height 15 Position 133, 6 ...
1
vote
1answer
19 views

QGIS: SAGA-GIS module “Add raster value to point” Error: unknown option 'INTERPOL'

I encountered an error while using the "Add raster value to point" SAGA-GIS module in QGIS (2.16) to retrieve altitude values from a raster DEM previously interpolated from TIN points (as vector ...
1
vote
1answer
20 views

How to download all OSM data within a boundingbox with Overpass?

Is it possible to download openstreetmap by direct link through http://overpass-turbo.eu without removing any data? Basically I am trying to download the openstreetmap data with defined boundaries in ...
1
vote
1answer
13 views

Changing projection of PostGIS data? [duplicate]

I have exported osm data using osm2pgrouting in the database, it has SRID 4326. I want to change projection of all the tables created to a particular SRID in UTM. I read the post FIrst and Second, ...
2
votes
0answers
35 views

QGIS GRASS: Error when converting vector to raster

I am trying to convert a vectorial layer (a grid of regular points with values, representing probabilities, associated to each point). I tried to use QGIS, but I got this error: ERROR 1: Attempt to ...
0
votes
1answer
21 views

Python code in ArcGIS field calculator error?

I've tried writing a code block using the Python Parser of the ArcGIS Field Calculator. Here's what I am trying to achieve: There's a field in my attribute table with values for some, but not all of ...
0
votes
0answers
29 views

Using custom kernel in ArcGIS focal statistics?

Working with ArcGIS 10.2.2. Want to operate with the focal statistics and created my own kernel in xxx.txt. But when I choose "neighboorhood: irregular" the kernel input is greyed out. (Define ...
0
votes
1answer
15 views

How to change info div based on baselayer selection?

I'd like to change the map logo in a info div based on the baselayer selection. For what I understood I have to use events but dunno how. Here is my code: <!-- Add LOGO --> var info = L....
0
votes
0answers
25 views

Amending existing plugins to match Qgis 2.16+ fTools removal

Part-time development started about a year ago to create an add-on for Qgis. Many of this plugins capabilities are written with fTools commands. I am wondering if there is a recommended document to ...
1
vote
0answers
25 views

Seeking data for residential maps (buildings, roads, etc.)?

I am developing an application which requires heavy styling of maps (at a street level, zoom 16 would be ideal), so I'd like to simply take in the map data and draw the polygons myself. However, the ...
0
votes
1answer
23 views

Furthest point from polygon/point

I want to calculate distance between smaller dots (they represent towns, villages etc.) and these larger red dots (capital cities of admin. region). My goal is to show wich location is the furthest ...
4
votes
0answers
46 views

How to show labels exactly around a circle in QGIS?

I found an interesting way of proportional symbol mapping and labeling, I think this was made by Adobe Illustrator but I couldn't find out if it can be done in QGIS. What I am interested in the most ...
0
votes
1answer
16 views

How to remove cloudy pixel from MODIS NDVI (MOD13Q1)

I am using MODIS NDVI product (MOD13Q1) for the vegetation changes study. I want to remove cloudy or bad pixel from MODIS NDVI data. I am not getting any suitable method or software or any program to ...

15 30 50 per page