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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65 views

Displaying QGIS layer after loading with Python

I'm successfully loading several layers with Python, but can only get to see them in the map window if I manually zoom to extent afterwards. Once the last layer is loaded I call zoom to extent in the ...
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77 views

Layer relations via Python

Is it possible to, through Python, to create the relations that it's possible to create in Layers/Properties/Fields/Relations, and if so how? I first thought these were saved in the styles, but that ...
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74 views

How to disable “Simplify geometry” via Python?

After I've loaded a layer from a table in my db I'd like to disable the 'Simplify geometry' (found in Layers/Properties/Rendering) programatically using Python. I've tried several versions of ...
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273 views

GeoServer create layer from PostGIS (data type point)

(Several days ago a user on gis stackexchange suggest that I should use OpenGeo (I was using geojson before). I succeed at what I was doing at that time, but now I have a different problem.) I was ...
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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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130 views

How can I copy columns from layer 1 to layer 2?

I have two layers, the first layer is pipe: that has some fields (column) title like : length, id, material. Also I have another layer that is empty (without any fields). How can I copy fields ...
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37 views

Changing the symbology of layer when converting from Layer to KML using Python

Is it possible to change the symbology of a layer file using Python? I have a script that creates a layer file and converts it to kml, but every time I run it the symbology color in the kml of the ...
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1answer
177 views

How to select only polygons that overlap with another layer?

I have two shapefile layers created from different thresholds from a predictive model (Pink=80; Yellow=95). Is there a way to create a new layer of only those pink polygons that contain yellow ...
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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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378 views

Code works on python console in QGIS but same doesn't work in stand alone script

I'm trying map rendering with stand alone script, so I have small script which works fine in python console provided QGIS, however when I run same code in stand-alone script it executes without error, ...
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2answers
105 views

How to request group of layers from Geoserver with turn off/on capabilities? Geoserver layer organizer

I would like to organize my layers by topics, and for each of them (if chosen on the client-side), I would like to request a single-tile image, which contains the predefined layers in the correct ...
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130 views

Part of text missing in legend and text boxes

I have had issues lately when exporting to pdf from ArcMap 10.2. Parts of the text sometimes fall off and goes missing. Mostly it's been some lines in legends, but now also text boxes. The text is ...
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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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1answer
243 views

How does Leaflet layer ordering work with CartoDB layers?

All, I'm trying to figure out how Leaflet layer ordering works when you have layers coming from CartoDB. I have a map with 1 polygon layer (cartodb), 3 point layers (cartodb), 1 basemap layer ...
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2answers
188 views

Using Qt Designer to Create a Form in QGIS that can search for a specific point in a layer

Good Day! I would like to ask if you can create a form in Qt Designer to create a form that can search for a point on the map using data that the user will provide such as the Name. I am currently ...
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3answers
203 views

Is there an iOS app to display several offline raster maps with transparency?

There are several iPhone apps displaying offline maps. Some of them can show custom maps, for instance loaded as MBTiles or sqlite files. Galileo-app does this pretty well. But it is only possible ...
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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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120 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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1answer
70 views

How to determine number of layers in a given .mpk file and then enumerate it using ArcGis Runtime SDK for WPF 10.2

I need to determine number of layers in a given .mpk file and then enumerate it using ArcGis Runtime SDK for WPF 10.2. Can anyone provide me some link or code/snippet..thankyou
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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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1answer
181 views

QGIS Quickly switching overlapping raster images

I'm new to QGIS, and haven't used arcGIS in about 5 years, however I've just seen someone using arcGIS and was able to quickly switch between overlapping rasters when checking registration. The top ...
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1answer
485 views

Export multiple layers in ArcMap 10.1 and change each layer's source to exported data

A client has requested the MXD and relevant data for a particular map. The file contains over 40 layers across multiple data frames and references multiple geodatabases and shapefiles. Is there a ...
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1answer
216 views

How can I modify layer order with the QGIS python API [duplicate]

Typically, after a new_layer = addRasterLayer(...) that inserts new_layer before the active layer, I'd like to move it to the top of the table of contents. How to do it? I use an existing QGIS ...
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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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1answer
25 views

Icons of different layers cover each other

I have converted 6 KML files (including a set of points) into 6 layers by ArcMap 10. For points in each layer, I have considered a special icon with a specific color. I also decreased the size of ...
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2answers
320 views

How to avoid “Handle bad layers” message when using QGIS Flowmapper plugin?

In QGIS, if I close a project and try to open it a few days later I often get a message that says "Handle bad layers". This is very frustrating because when I open the project various layers will have ...
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2answers
105 views

CartoDB Vis - Multiple layers mouse interaction?

My map visualization has two layers: 1) A city layer where the cities are represented as standard markers. 2) A county layer underlying the cities which has county level aggregate data. The layer ...
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1answer
95 views

QGIS 2.0.1 - problems to add layers - encoding?

I have just installed standalone QGIS 2.0.1 on a PC with Windows 8. But, when I open it and try to add layers nothing happens? I browse to find the file I want and click 'open' but it doesn't turn up ...
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43 views

Updating Description of MXD Layers

Is there a way to force the update of the Description content in the Properties/General/Description of each feature layer in an MXD? I frequently update metadata for each feature class in ArcCatalog, ...
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1answer
108 views

Delete Turned Off (Unchecked) Layers from Arcmap with Python

I have about 100 figures that have been updated countless times and a lot of the old data was left in each .mxd but was only turned off (unchecked) and not removed. I would like to remove these ...
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2answers
219 views

OSM zoom levels correspond to what level of text labels?

I'm using Maperitive to render OSM map data of Mexico City as SVG files, destination Illustrator and then print (on paper, in a book). At different zoom levels, the resulting maps have different ...
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2answers
131 views

How can I share my own spatial data on an online map?

Note: I am very new in this field! Can I find an open source map that enables me to display an overlay of my own layers? I need to add some text and rectangles for a certain area, but my ...
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47 views

What prior art can be cited to refute Apple's claim to have invented Interactive Map? [closed]

In U.S. Patent Application 20130339891 Apple Inc. claims "An interactive capability enables a user to dynamically adjust the content of an electronic map" as well as "Geospatial applications can be ...
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2answers
74 views

Show only some buildings

How do I show only some buildings? I only need to show 3 cabins in the forrest, but not every house in the whole village around, and the city close by. Maybe some of the symbol buildings in the city ...
3
votes
1answer
232 views

Show alternating contour lines

Is it possible to show only every other counture line? And how do you do that? (Im new to QGIS Lisboa 1.8.0, but even newer to QGIS Dufour 2.0.1, but have used ArcGIS a bit a while ago, and also ...
3
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1answer
42 views

qgis2 - hide a layer (or its labels) when another layer is coincident?

I have two road layers - one is a subset of the other, so, there's a lot of overlap. When they are coincident, I see labels from both layers. The 'lower' layer is the thin line road in the SW ...
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1answer
67 views

geoserver/openlayers: multiple layer geotiff

I have a geotiff file with multiple layers (46 layers), each layer corresponding to a different date (the geotiff layers corresponding to sea surface temperature, 1 layer per year). I imported this ...
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3answers
177 views

How to prepare a multi-colored vector layer?

I need to present a multi-colored vector layer and something similar to below: I need to prepare the vector layer by making use with the data set available in my database. Inside my database, I ...
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1answer
49 views

Calculate best area with overlaying multiple layers buffer shapes

I am using QGis and I have a set of 20 layers with buffers. I'm interested in where they overlap most and I want to create a single layer that shows which are the places where they overlap most and ...
0
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1answer
84 views

Graduated colouring Voronoi polygons? (QGis)

I've got a huge database of depth points for the whole Irish sea which I'd like to be a nice smooth surface, or at least have a depth value associated with the entire area (i.e. include the ...
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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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votes
3answers
236 views

How to speed up redrawing of layers (from shapefiles) in MXD? [duplicate]

How do I speed up the process of redrawing layers in a MXD? I have already tried reloading and indexing the layers. The layers were created from shapefiles.
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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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1answer
1k views

Add simple image layers to MapBox / Leaflet?

Is there an easy way to add simple image layers (with no, or very limited, GIS data) to Mapbox and/or Leaflet? Google maps seems to have the ability to add custom layers, simply by attaching the SW ...
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1answer
151 views

Where to upload layers in geoexplorer?

I just install opengeo suite (boundless) in my machine and try to explore it. I followed the instruction in user manual and I encountered a problem. In "Load your data with GeoExplorer" part, after ...
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1answer
103 views

ArcPad VBscript restrict layer editing

I am attempting to restrict editing on certain layers based on the user log in. Dim objLyr1 Dim objLyr2 Dim objLyr3 Set objLyr1 = Map.Layers("PatchPanel") Set objLyr2 = Map.Layers("wHydrant") Set ...
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1answer
649 views

Draw order (zIndex) of OpenLayers polygons and points in the same layer

My question is similar but slightly different from this one: http://stackoverflow.com/questions/5003349/openlayers-vector-features-z-indexing I have an OpenLayers Vector layer which contains polygons ...
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56 views

Geoprocessing Ungroups Layers

Is there a fix for this, am I only imagining this, or is it a bug: ArcMAP 10.1 for Desktop Build 3035 on a 64 bit Windows 7 system When I run a geoprocessing task that modifies the input data (such ...
4
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1answer
134 views

Is it possible to store a default symbology layer in an arcpy add-in?

Since arcpy is limited in how symbology can be manipulated, I was curious to know if a symbology layer can be stored in an arcpy add-in. Does anyone know if it is possible to store a .lyr file, or ...