1
vote
1answer
30 views

Reclassifying raster analysis (like the one in ArcGIS Spatial Analyst) in QGIS [duplicate]

I am trying to reclassify raster (DEM) in QGIS. I know how it is done in ArcGIS (Spatial Analyst, reclassify option), but I would like to know how it is done in QGIS?. The point of my exercise is to ...
-7
votes
0answers
45 views

how to minimize the time for the execution of the request? [on hold]

hello i'm tired with this query, and i would minimize the time for execution of this request, so how to minimize the time for the execution of the request (13 million MS and not yet)!! update troncon ...
-5
votes
0answers
13 views

don't know why the popup dosn't appear when i click on the map [on hold]

<html> <head> <title>projet avec geoext</title> <link rel="stylesheet" type="text/css" href="geoext/resources/css/popup.css"> <link rel="stylesheet" ...
2
votes
1answer
21 views

CartoDB SQL API styling individual polyline returns

I am creating a web mapping application that will return appropriate routes based upon ST_length query on a cartoDB dataset. So far, the code below successfully maps those routes (and clears any ...
1
vote
0answers
16 views

Make openlayers embed map

I'm trying to do some kind of embed map and i see the way Google maps works. For exaple Google maps creates a URL like below : https://www.google.es/maps/@39.4379818,-0.4569777,17z Where it takes ...
3
votes
1answer
41 views

Maximum Solar Zenith Angle for Landsat-8 images

Heliosynchronous satellites enter a darkness region at high latitude in winter. They are most of the time programmed not the capture an image when the solar zenith angle becomes too large because the ...
0
votes
0answers
9 views

WMS Layers from Azure Geoserver not loading with multiple users

I am loading multiple WMS layers into a leaflet web application from an Azure virtual machine Geoserver that pulls data from a PostGIS database on the same machine. The layers load through quickly ...
0
votes
0answers
17 views

Convert a raster with one band into a raster with RVB bands on QGIS?

So yesterday i downloaded a raster tile on a WMS server and exported it with Grass. I get a raster with 3 bands, i treat with the Semi automatic classification Plugin in QGIS and it works perfectly. ...
3
votes
0answers
30 views

The features don't appear at the first time in my exported PDF

my problem consists of exporting to PDF format. The first time I run my code (Text Editor of QGIS) the PDF only has the legend. But the second time, it has the features. Changing the line of ...
0
votes
0answers
11 views

How to create water basins with given river network? [on hold]

I would like to create basins (and subbasins) for a given river network. The river network is not derived from a DEM, but from satellite imagery or maps. However, I do have a DEM as well. My initial ...
2
votes
0answers
24 views

Leaflet filter on geoJson properties : multiple criteria

I'm using Leaflet filter on geoJson data. I'm able to apply it with a simple criteria : filter: function(feature, layer) { return feature.properties.field1 == "yes"; } I want now to apply it ...
3
votes
2answers
190 views

Install QGIS 2.14 Essen on Ubuntu 16.04 Xenial

I'm having trouble installing QGIS on Xenial. `debian` release When I try using the debian release (i.e. without ubuntugis dependencies) I get the following errors (please note there is no xenial ...
0
votes
0answers
11 views

Why rescaling disturbs Band Order of FLAASH derived Reflectance image?

I have derived Reflectance values (MS bands) by calibrating Landsat8 OLI using ENVI's FLAASH module. The outcome of the FLAASH derived Reflectance values are scaled by 10,000 (by default), The reason ...
0
votes
0answers
14 views

Geonetwork 3. - “Provided by” [on hold]

I work with Geonetwork 3.x and after importing some metadata, when i use the search filters on the left with checkBox, the values of the "Provided by" section are not readable (ex : 49f65452c - ...
0
votes
1answer
17 views

owslib - geonetwork - Failed to establish a new connection: Connection refused

i am tring to search for a specific record in geonetwork with owslib, according to documentation in https://geopython.github.io/OWSLib/. but it fails : >>> geonetwork = ...
0
votes
0answers
14 views

How to extract feature class representations of multiple feature_classes from multiple gdb's? [on hold]

We have 100's of gdb's in different folders. Would like to extract the list of feature classes which has "symbology representations" from multiple gdb's. Will it be possbile ? I couldn't able to ...
-3
votes
0answers
22 views

How configure a search button in leaflet map [on hold]

I have created a web-map based on leaflet with support of QGIS and qgis2leaf. I have a table with: name, surname, city, job, but I don't understand how to configure the search button. I want to ...
0
votes
0answers
5 views

My toolbar on open layers map multiplies its icons when I add more controls

As the title said, how can I stop the buttons from multiplying? here's my code: var lineLayer = new OpenLayers.Layer.Vector("Line Layer"); var polygonLayer = new OpenLayers.Layer.Vector("Polygon ...
2
votes
0answers
25 views

Bold and Italic layer labels with Python in Qgis

I'm trying to apply some labeling properties to a layer using Python. Everything went fine, except the way I tried to apply the Bold and Italic settings. Here is a part of the code: ...
0
votes
1answer
11 views

owslib - ValueError: All strings must be XML compatible: Unicode or ASCII

i try to use owslib to search metadata in geonetwork, and a i have problems when the string contains non ascii characters. geonetwork = ...
1
vote
1answer
24 views

converting process for dwg plan

I work for an train enterprise and we want to develop a SIG. The main goal is better property management. The main data to manage are dwg plans. My job is to write a process to introduce this plan in ...
1
vote
0answers
5 views

Testing symbol file existence in Mapserver

I have a set of PNG images I want to use as symbols in a point type layer in Mapserver. The file names come from the database in the DATA keyword, and if a file exists, it's all right. But if it does ...
1
vote
1answer
12 views

Getting Error: Districtna.getExtent(…) is null

I have dojo combo box to display district names when I select one district it should zoom to that particular district.selection is working fine but zooming not happening i am getting ...
4
votes
1answer
38 views

QGIS print composer internal grid labels

Is there a way to have the grid labelled inside of the map frame (I don't mean the option to draw coordinates inside the frame)? What I want to achieve is a "ladder" of labels like in this example: ...
0
votes
1answer
23 views

rasterVis plot3D in R: obtain consistent x-y axes with extent() / projection() shown in RasterLayer object

I have a RasterLayer object z: class : RasterLayer dimensions : 100, 100, 10000 (nrow, ncol, ncell) resolution : 0.06534037, 0.03165736 (x, y) extent : -96.63908, -90.10505, ...
1
vote
2answers
91 views

Changing single character in attribute table with ArcPy?

I was trying to speed up my data processing, and I was wondering, which would be the python code, that could browse through my shapefiles, and find special single characters (which I define) in ...
0
votes
0answers
19 views

Beginning a spatial analysis with own data [on hold]

I am beginning a spatial analysis for artifacts (individual attributes) distributed across an archaeological site. I have the arbitrary location of all the points within the set area. I am not ...
0
votes
0answers
18 views

Extracting projection details for TAB files from multiple folders using arcpy's describe spatial reference?

I am trying to extract projection details of vector files (it might be a tab or shp file) in multiple subfolders using arcpy's describe.SpatialReference. If i run this code, i am getting this error. ...
1
vote
1answer
11 views

GeoTools : Zoom, Pan, Move custom action (setState not working)

I'm using geotools v14.3. Until now I've been using ZoomInAction() to add a zoom in button to my loaded map. Now I want to add a custom toolbar for zooming, panning, resetting and other general ...
0
votes
0answers
7 views

How to read a tile package file(.tpk) in ArcObject C#?

I should read and show some tile package file using ArcObject C# 10.x. However, I failed to find how to read an tile package file on My Application using ArcObject C#. So, please tell me about ...
2
votes
0answers
26 views

Visualizing netCDF file with unknown projection

I'm having a tough time visualizing a netCDF file with poor metadata in ArcMap, which is probably not a surprise. I know the file to contain ozone concentrations over the United States. If I try to ...
2
votes
1answer
29 views

How to create a Null shape in shapely

I want to create a valid Shape object in shapely which has properties but has no geometry. e.g. For creating features to be saved into a shapefile. All features have attributes/properties but some ...
3
votes
0answers
31 views

Approach to controlling which layers display in a QgsComposerLegend

I've tried 2 approaches to control what shows up in print legends. Neither of them work which is troubling because other than pruning the layerRootTree in advance of composer.addItem(legend), there ...
-3
votes
0answers
8 views

How do I ensure data uploads correctly - Categorize schools by criteria [on hold]

I have a data set for schools. One column notes if the school may participate in a program ( Y, N, or NA). When I upload the data, the Y/N/NA, and occasionally school enrollment numbers, shift to a ...
2
votes
0answers
27 views

Python Script to apply the Northing and Easting of a photo center .shp file to a tiff. [duplicate]

I have a group of tiffs I want to georeference. I have the photo centers for each of the tiffs but they are not linked. After looking at the comments I believe there would be a way to take the ...
0
votes
0answers
10 views

Uploading .gpx files (i.e., GPS data) into ArcGIS 10.3.1 and creating home range graphics [on hold]

I'd like to preface this by saying I have very little ArcGIS experience. I took two introductory courses during my undergraduate education but don't remember a lot of what we covered (the classes were ...
1
vote
2answers
52 views

Quantitative vs Qualitative heatmap

I'm having a debate with a colleague of mine over whether generated heat maps are quantitative or qualitative in nature. The underlying data source is GPS points. The GPS devices that we use are ...
1
vote
0answers
12 views

Edit limited to part of multi geometry collection in kml google earth

I have polylines on kml format ,I want to edit those kml polylines via google earth when I try to modify the polyline I get the error Edit limited to part of multi geometry collection.
0
votes
0answers
15 views

Centering Leaflet Map on Website [on hold]

Should be really simple but I just can't seem to get it to work. How do I get my map to display in the center of the webpage? I put tags around the div id line and that works but it also centers the ...
0
votes
0answers
28 views

Loading WFS from Geoserver to Leaflet

I use GeoServer 2.7.0 and Leaflet-0.7.7 and the jquery: <script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js"></script>` for showing a WFS in my Geoserver. How do ...
-3
votes
0answers
21 views

differences between null value and nodata in Arcgis? [on hold]

can you please let me know how differences between null value and nodata in Arcgis? and How to use setnull and isnull?
1
vote
0answers
22 views

SRTM 30m hillshade output low resolution

I am trying to hillshade 30m SRTM geotiff. The result is terrible. I know that these rasters normally come with geographical coordinates and i have to reproject it before i apply hillshade because ...
0
votes
1answer
15 views

Read WKT geometry using JTS 1.13 in java

I want to create a shape file from coordinates, in the client side I take the coordinates of a polygon by opelayers, it send to a java class, in this class read the geometry of the polygon, when the ...
1
vote
0answers
15 views

Circles preview in QGIS for TripAdvisor API

I'm going to use the API provided by TripAdvisor (see here: https://developer-tripadvisor.com/content-api/documentation/) to download hotels in some municipalitys from their servers. Data is requested ...
0
votes
1answer
15 views

How to I change the extents of a Euclidian Distance Raster?

I am calculating the Euclidean distance of a set of points. The output raster truncates the resulting raster image to the farthest north, south, east, and west point. I need the distances to extend ...
1
vote
1answer
25 views

I can't tell if my GeoJSON file is too large for openlayers

I am a bit new to this GIS thing. I have shapefile that I fed to geoserver in order to retrieve a GeoJson file. I was attempting to display this on openlayers, but it won't show anything. The file is ...
0
votes
1answer
25 views

ArcMap suddenly started exporting massive .png files?

I'm exporting a very simple map. It has a single polygon shapefile on top of ESRI base imagery. There are several text boxes as well, but just simple Arial text. I'm exporting to .png at 220 DPI and ...
1
vote
0answers
9 views

arcgis 10.2 server how to get legend to display symbology only for visible classes

i have a web app that consumes legend info via a esri/dijit/Legend widget. The problem is that it displays symbology for all data, even those features not visible in current extent, is there a way to ...
0
votes
1answer
16 views

mapping with spplot

This question should be easy! I am using spplot for visualizing a map with suitability results. However I would like to know how do I set the limits of z, because the values are not being ...
1
vote
1answer
20 views

Why can't PHP insert new geometry on PostGIS?

(Copied this question from stackoverflow, since it may have more answers here.) I'm using ogr2ogr to upload a GPX file to PostGIS. When I do it on command line (Ubuntu 14.04), it works fine. ...

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