A layer is a collection of information. It contains specific elements of a gis in a specific presentation method (e.g raster or vector layer). Layers can be edited separately in order to create individual toppics for a map.

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How to save KML-layers style (Q-GIS)?

Is it possible to save a KML-layers style? My layer is set to 50 % opacity and I want to save that setting into the KML-file. The plugin qgistokml can´t yet do it, and only work with points.
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224 views

How to load the default layer style from Postgresql with Python?

I would like to write a python macro that upon opening my QGIS project file will reload the default style for each layer from the postgres 'layer_style' table. I have had a look at the documentation ...
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186 views

Adding multiple layers to Tilemill from a single sqlite DB

This is a repost of a question I had over at the MapBox support board. Since I wasn't having much luck over there, I'm hoping I would have better success here. I'm having trouble adding more than a ...
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263 views

Handling “bad layers” in QGIS version 1.9

I'm having a problem every time I try and open any project in qgis 1.9. It will load part of a few layers and then a yellow bar comes up across the top of the map area that says "Handle Bad layers: 23 ...
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196 views

How can I move two layers at once in QGIS?

I'm trying to move two digitized layers, one containing points, the other polygons to a different location at the same time. QGIS doens't seem to allow this. Even if I select both layers and features ...
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71 views

proportion of image layer in OL

I tried create map with single image used OL. But I have a trouble: image in map has a wrong proportions. Img: 1540 x 1481 Img in map: 2858 x1481 My js code: $(function (){ var map = new ...
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219 views

Layer set visible

I add this layer like this: var POIData = new esri.layers.ArcGISDynamicMapServiceLayer("https://mysite.com/ArcGIS/rest/services/POI_Data/MapServer"); map.addLayer(POIData); ...
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68 views

Get layers and apply renderer to layer list from SDE ArcMap

I have the code that gets the layers from SDE, but when i add them to the map they have a different symbology. there is about 80 layers and i am accessing the SDE by getting the workspace from a ...
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211 views

Hack to change data source of a layer file in ArcGIS 9.3.1 with python?

I'm looking for a way to change the source of my layer file using python. Actually I want to do this because I need to re-use a XSL template which is defined under the tap HTML popup of the layer ...
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101 views

Remake gxp class

I want to remake gxp.editFeature class. In standart class to edit object need to choose it on map. I want choose abject in list of objects and edit it. So To do this i need make a new gxp.editFeature ...
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351 views

Using Google Maps with OpenLayers for some zoom levels

I've had a search on here to see if this has come up but I've not found anything, sorry if this is a duplicate. I'm trying to use the Google Maps layers with an OpenLayers site, but not for all zoom ...
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358 views

pdf google maps export

In my php+postgis+geoserver+OL application I have to export a map in a pdf file. This map has two layer: the base is a google map layer and a vector layer as overlay. Is there a way to make a pdf ...
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47 views

OpenLayers 3 - Monitor layer loading progress

I'm doing an upgrade from OpenLayers 2 to OpenLayers 3. In OL2, I was monitoring the loading progress of layers with their loadstart and loadend events. With grid layers I was even able to show a ...
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46 views

Accessing secure Geoserver layer with username password

I created Users, Groups and Roles in geoserver. And I set the user roles for my workspace. user1 can read user2 can write And I want to access my layers as anonymous like this: ...
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57 views

Open a *.qgs project file in API, why maps do not show?

I'm using QGIS-2.4.0 API. I saved a test.qgs file in QGIS Desktop, in this project, there is one layer that is visible in it. Then I open the test.qgs project file in QGIS API to developing an App, ...
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37 views

Can QGIS generate a map that composed of several .shp maps?

I'm using QGIS-2.4.0 API to develop application. I need a map that composed of several vector layers. If only this, it can be done by merge in QGIS, but I need more for that: the map(or project?) I ...
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10 views

How to re'display feature after using my 'filterFeature()' function?

The code below is a function that hides a certain region in the map. The problem is that I can't redisplay it. I've tried by removing this line: wfs2.features[i].style = {visibility:'hidden'}; but ...
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57 views

ComboBox Addin to populate Layers .NET C#

I am using Arcgis 10.1 and created following class derived from ComboBox. class LayersComboBox : ESRI.ArcGIS.Desktop.AddIns.ComboBox I want Combo box Add-in to populate added layers(in table of ...
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107 views

Missing Raster/Vector Layers after converting KMZ using KMLToLayer tool of ArcGIS Desktop?

I am trying to write a tool that will let users upload a KML/KMZ file and then be able to view it in a client application (something like an esri js api or Flex app). I am ok with storing the data in ...
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32 views

How to configure a write only layer on Geoserver?

This is probably a wrong way of doing it, but I was exploring this option only because I do not know how to implement the right solution. We have a layer to which features are added using WFS-T. We ...
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36 views

Lining up three Layers that use same Coordinate Reference System (CRS) in QGIS?

How do you make all borders of a layer equal? they should be equal but i don't know how, mCRS layer is all in philippine zone 5(EPSG:3125), with the same formula/equation, I'm new to QGIS and I'm ...
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242 views

Creating a layer switch Google Maps Api v3

I have generated a basic webpage with Visual Studio 2012 that displays a Google Map. My goal is to add multiple KML layers from my Server onto the Google Map, BUT, i want to be able to have a sort of ...
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26 views

Get Web Map Layer Field Value for If/else Statement

I've been trying to read through the ArcGIS JavaScript API but can't find what I want. I have a web map on my page that is based on my my map stored on ArcGIS online. I want to create an if/else ...
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105 views

OpenLayers Vector Features with common properties in multiple Layers

I am trying to manage features across different layers. Features are displaying weather parameters at some points on the map. Hence there is a wind layer, a temperature layer, etc. which all are ...
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22 views

Adding layers with different WKIDs to ArcGIS API for Silverlight application?

In Esri Silverlight application, how can a map layer with a different WKID than the one used in the application be added? Will Esri 's Silverlight application handle the re-projection?
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28 views

Geoserver layer rotation problem

I have a mapping system setup with PostGIS, Geoserver 2.4.1 and OpenLayers 2.12 I am trying to use the geoserver vendor specific parameter "angle" to rotate a layer, and it seems to work fine. ...
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92 views

Clipping multiple layers in QGIS 2.2

I have huge amounts of data (multiple country-wide shapefiles) which i have to work with constantly. But working on separate cases i only need a fraction of that data (region, city etc.) Loading the ...
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25 views

Statistics on matching point layers ignoring nodata values in QGIS

I have a large area and a street crossing this area. Both are vector point layers in QGIS. The large area contains -99 as NoData value. I already created the intersection of both as a new layer. I ...
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30 views

I want to make a table that displays shapefile information

I have a parcel I'm working with that has multiple layers laid over it. I'd like to make a table that displays various attributes of those different layers. For example, within that shapefile, I'd ...
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52 views

How to intersect more than 2 layers in QGIS

I have a dozen layers, some intersecting with others. Using the Intersect tool only allows 2 layers at a time but can you add extra layers to find where it intersects? Even if it's 3 layers as shown ...
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20 views

Layer offset issue in QGIS 2.0.1

I have two loaded WMS layer and want to change their position relative to each other. First, I tried to use Layer class and write some kind of plugin, but I can't find any method that allow to change ...
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32 views

In QGIS Process Modeller, is it possible to automatically run a function on several layers without listing all combinations?

Trying to develop a Model which includes finding any intersections between layers and then merging them all into a single layer. I have 12 layers in total, it's not really efficient to list all the ...
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306 views

OpenLayers modify selected feature

I am trying to modify an already selected vector (feature) in Open Layers. In my map i have implemented "select on click" functionality, so what i would like to achive is to have a "Modify" button ...
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66 views

How to activate edit tools

I have opened a project I worked on earlier on another machine, but the edit tools are not active, so i cant turn on editing to change a layer. What is the reason for them to be gray, and how can i ...
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46 views

Android app where i can import image and set waypoints by GPS

Hello i'm looking for an application for android where I can upload a large image raster and apply for it `these GPS waypoints. We would like to count the trees in the area, we have the exact raster ...
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28 views

LayerSwitcher problem in FireFox: layer after turn off and on are not displayed

I have a problem displaying layers using the LayerSwitcher. The problem only occurs on FireFox and not in the IE. On some applications, layers which I turn off and again on, are not displayed until I ...
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33 views

In Opengeo 4.0.2 suite, enabling labels causes map to show pink screen.

In Opengeo 4.0.2 suite, enabling labels causes map to show pink screen. The map shows up properly if labels are switched off. I am using Opengeo 4.0.2 suite on Ubuntu 13.10 server. How do I ...
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124 views

Geoserver tile caching

i have a problem with "tile layers". i want to display my layers in tile layers but i always have a blank page. i'm already displaying them in the "Preview layer" with openlayers and it worked. i ...
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25 views

Show the paths but not roadsides and driveways in the line layer

I want to display paths in the woods but the paths are all in One (line) layer that contains all roadsides, pavements, drivvays, but also paths, tractor road and other relevant roads in, and up to the ...
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92 views

Crash when editing a layer and when saving in QGIS

When I edit the layers, and its small changes like adding a name (or make it appear in the map), QGIS very often crashes (like for every third or fourth or fifth edit, seldom gets past ten edits ...
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66 views

OpenLayers: WMSGetFeatureInfo shouldn't return feature when a layer is hidden

In OpenLayers, I have a map with several layers. I created a control to query the layers and return feature info. var info= new OpenLayers.Control.WMSGetFeatureInfo({ ...
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64 views

QGIS 2.0.1: Changing layer properties with python console

I'm working on a plugin that will aim to ensure that the following steps either "transparent" to the user with one click :   Creating a table with predefined fields Record in this table in postgis, ...
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113 views

how do I add attribute features to an attribute table which already exists?

Using Verson 2.0, downloaded as normal. I have an ESRI shapefile of my road map for 2006. I have a paper map of roads for 1969. I want to see what roads have been built between 1969 and 2006 (none ...
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153 views

how can i read an attribute value from qgsfeature?

How can i read an attribute value from qgsfeature ? i am trying to update some attribute using other and i have to read value from attribute in the qgsfeature . my source code: provider = ...
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67 views

Geoserver 2.4.0 via the web admin interface, not adding layers in Internet Explorer, but working in Firefox

For some reason I cannot seem to add layers via Internet Explorer, but I can via Firefox 23. In addition the styles that I upload also appear broken in Internet Explorer 8, but do not in Firefox. Is ...
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132 views

Add Layer into existing GroupLayer in map c#

I can't add Layer into existing GroupLayer in map. I'm trying this code below, but it does not work! I need code looks like this: public void AddLayer(AxMapControl mapControl, ILayer pLayer) { ...
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63 views

Making a KML layer “always on”

Is there a KML tag or specification by which you can force a given layer (specifically, a screen overlay) to be "always on", in that there is no way for the user viewing the file to make that layer ...
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108 views

QGIS layers not adding properly

using QGIS 1.8.0 lisboa on windows 7 pc adding vector layers and they are not adding properly they don't show up in the layers list but they are there when I happen to merge the the layers ...
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44 views

How can I import layers into a database?

According to the QGIS User Guide (release 1.8.0, page 203/204) I only have to drag a layer from the QGIS Browser to the DB Manager. But for me this does not work.
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115 views

“could not get any sources: no image returned from source WMS” error in mapproxy demo

I am trying to connect my mapserver to MapProxy. First part of the map file is shown below MAP FONTSET "fonts.lst" IMAGETYPE png MAXSIZE 4000 SIZE 800 800 EXTENT -20000000 -20000000 20000000 20000000 ...