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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226 views

How to convert shapefile to KML file using ArcPy? [duplicate]

Python script that checks to see if a specific layer file exists in the current workspace and, if it does, converts the layer file to a KML file. Does it work with a shapefile? Code so far: for file ...
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269 views

How to zoom to the extent of Qgsvectolayer qgis?

Anyone know how to zoom to the extent of a Vectorlayer in qgis using python plugin?
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65 views

qgis 1.8.0 crash when starting qthread

I am trying to update a vector layer attribute table using QThread. i connect a pushbutton click with a slot to start the thread: def EGSupdateAttributeTable(self): AttUpdateEGSThread = ...
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1answer
82 views

ESRI ArcMap Topology rules on multi story buildings

I would like to run some topology rules to find snapping errors in our polygons but I am running in to the problem where we are working on multi story buildings with every polygon regardless of floor ...
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0answers
95 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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1answer
232 views

How to activate a layer in QGIS layers legend

How can I activate a layer in qgis map legend automatically using python code . I am using qgis.utils.iface.setActiveLayer(self.theLayerToEdit) but the layer is still not checked in the maplegend. ...
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41 views

What is the action name in qgsinterface for the deselect feature from all the layer tool?

I want to add the deselect feature from all the layer tool in the toolbar when the qgis user start editing a vector layer. anyone know what is the name of this action in qgis api 1.8?
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69 views

Sources for meterological data with high resolution

I was running Maxent on an endemic species of andaman and nicobar.But the climate data I have from worlclim.org ( tile number 29 ) is not of high resolution and thus I can't see the distribution ...
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4answers
955 views

How to get vector data from OSM to use in QGIS?

How do I get data from OpenStreetMap which I can then edit in QGIS layer by layer? What is the best OSM output and what / how do I get to a suitable input for QGIS? OR...is there another appraach to ...
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2answers
819 views

Can QGIS preserve layers when exporting a PDF? [duplicate]

I saw this posted about a year ago (Can QGIS preserve layers when exporting to PDF?) but figured it was worth asking again -- is this possible? My usual workflow with ArcGIS is to export to AI then ...
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55 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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1answer
424 views

QGIS python - reference a layer in the table of contents

I'm trying to create a plugin for QGIS using python, But need some help. I want to 1.Zoom to a layer and 2. make the layer visible(switch off or on). But I have managed to zoom to an active layer by ...
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72 views

why is my map is not in the center when I load my map in OpenLayers?

why is my map is not in the center when I load my map in OpenLayers?And when I drag my map,it dont move sometimes,It has been tortured me for a long time,any advice would be grateful! var maxExtent = ...
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1answer
113 views

How to convert format and CRS of many shapefiles to kml (or csv, json..)?

I tried to use QGIS to transform shp files in kml and to translate the CRS to use in a google maps application. My problem is that I have a lot of shp files that i can open in a bulk manner by drag ...
3
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2answers
250 views

Access Stamen tiles flavors with OpenLayers

i'm using OpenLayers (v2.13.1) and would like to use Stamen Toner tiles as background. The example is simple to understand : http://maps.stamen.com/test/openlayers.html But i'd like to use the ...
2
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1answer
101 views

Can I Turn Off or Remove Map Layers in QGIS Print Composer

The title pretty much says it all. I have a base map in QGIS that I am using with several Print Composers. In one of the Print Composers, I don't want one of the layers to show up. Is there any way ...
2
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1answer
198 views

How to replace the legacy function “doQueries ” to AMD ESRI Javascript format?

I'm trying to understand the migration of ESRI API for javascript, from legacy to AMD. In the case of this example, how replace the fucntion doqueries????: function init() { map = new ...
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1answer
465 views

Layer map plots on top of one another in R/ggplot2

I'm making a choropleth map in R/ggplot2. I have the colored part working just fine. This code p <- ggplot() + geom_map(data=c_1860, aes(map_id = GISJOIN, fill = AHL002), ...
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0answers
36 views

How to search for layers in the layers panel?

I have QGIS projects with a lot of layers. Sometime it's difficult to find a layer into Layers Panel. How to search it?
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104 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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1answer
290 views

ArcGIS 10.0 get sde information out of .mxd

The overall goal here is to iterate through several directories of .mxd files and document which SQL Server instance of SDE they are pointing to, with the database name and feature class names. All ...
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1answer
59 views

QGIS 2 bold Layer names?

I am currently working with QGIS 2.0 in an Ubuntu environment. I have a quite large project with many different layers and layer-groups. By default the layernames are in bold fonts and the groups are ...
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1answer
197 views

How to set style in the database (QGIS)

Is it possible to set style layers in the database? (QGIS) [MySQL database] I would like to set and share my style to other users when they open the layer it's still as my style. Thank you
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2answers
72 views

Error adding a delimited text layer

Im working with QGIS 1.8.0 and I have been trying to upload a delimited text layer but keep getting the following error : The layer ...
2
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1answer
117 views

Unable to change the layer unit in QGIS

I have been working with QGIS for 2 weeks and I got the hang of it now. The problem now is I cannot calculate the area of a created polygon. Because the layer unit is not changing to meters. When ...
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1answer
36 views

Last moment a layer in Geoserver was viewed

My company publishes >1,000 layers using several geoservers. We are publishing them on several different websites. Because there are so many layers, it is impossible for us to know which layer is ...
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1answer
364 views

Openlayers custom (local) OSM tiles layer with limited extent

I know, how to add an overlay layer by specifying my own URL. But what if the overlay layer extent is not as large as base layer - e.g. overlay layer is only avaliable for one country and not for the ...
3
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1answer
252 views

How to fix link between layer and shapefile in ArcGIS 10?

Does anybody know how to fix a link between shape file and layer file in ArcGIS 10? Every time I add layer file, there is a small exclamation mark next to icon and I have to define a source (path to ...
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1answer
320 views

Can one convert text annotations to a layer in Qgis?

I know text annotations can be turned on & off with Ctrl+T... but is there any way to export them as a layer? Thanks!
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98 views

How to create a Layer from a list of points in PyQgis

I`ve developed an algorithm that generated an two dimensional array with points. Each subList of this array must be displayed as an polygon on the map view, and the recently created Vectors should be ...
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63 views

group all layer index file after adding to TOC

I have added all the tif file of shape file to the map (Desktop).what i need to do group all tif file as one layer to TOC.How to do? Please help me.I am using c#.net
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146 views

Error 'Invalid geography. Antipodal edge…' with Postgis

I have a table in postgis like this CREATE TABLE locations (id int, name VARCHAR(255), pos geography(POINT, 4326)); with a couple of points. E.G. INSERT INTO locations (name, pos) VALUES ...
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2answers
398 views

How display many layers from Geoserver in one map?

1) I publish 4 layers in Geoserver (planet_osm_line, planet_osm_point, planet_osm_polygon, planet_osm_roads). 2) Then I add styles (from sld styles) to the Geoserver. 3) Then I set this styles in my ...
2
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1answer
139 views

OpenLayers: Can I drag a feature between two maps?

Is it possible to drag the features between two different maps? Now, I create feature on event mouseenter but I would like to insert the feature and at the same time start to drag this feature.
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31 views

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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97 views

Deleted layers still appear while loading project QGIS 1.8

I'm working on a project where I digitized a few maps (georeferenced) and I also added a couple of csv files. I deleted the raster and cvs layers after I included them into the project as shapefiles ...
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56 views

Change feature's image when it's not clustered

I'm clustering the features on the layer using AnimatedCluster this way: dataLayer = new OpenLayers.Layer.Vector("Data", { strategies: [ new ...
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1answer
1k views

Could not add the specified data object to the map

I have registered the postgresql database with arcgis desktop 10.1. In ArcMap, When I try to drag and drop one of the tables to the map I get this error: Could not add the specified data object to ...
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2answers
269 views

Custom filters (server side) for Openlayers Vector Layer

I have a vector layer in openlayers with source in GEOJSON (custom php server, which I have in complete control) and BBOX strategy. Vector points contain point sources which have different ...
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51 views

Is there a way to create read-only layers?

I have a project in QGIS with several views loaded from a postgis-database. Editing and creating new objects in these layers won't work (because they are views) and it would be easier if the user ...
3
votes
1answer
2k views

How do I add my own map layers to Leaflet

I have a Leaflet map and want to add two of my own small polygon layers (currently in shapefile format, but they could be converted to GeoJSON). Can this be done without a mapserver to publish them ...
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2answers
58 views

How to create thinner outside boundary outlines with bolder interior lines [closed]

I am working with a shapefile with a jagged coastline and interior regional boundaries. I am trying to create a thin line for the coast, so it appears more clearly, while still keeping bold, thicker ...
2
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1answer
179 views

OpenLayers - How do I change the WMS URL in Code

I want to be able to change the url for a layer in code. The reasons is that I am implementing local caching. When local caching is Not enabled, we use 4 servers to deliver tiles to run parallel ...
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1answer
444 views

Creating a layer after using SelectLayerByAttribute_management

Is it possible to use an existent layer to do a selection by attributes without having to use MakeFeatureLayer_management first? Because I already have a layer with the same name as the feature class ...
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1answer
145 views

How to make a virtual layer from ogr geometry?

I know how to do this: nodes = driver.Open(node_nav,0) node_lyr = nodes.GetLayer() node_lyr.SetSpatialFilter(None) But how do can use the layer methods on a geometry I created from scratch? ...
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1answer
87 views

Differences between Arc 10.0 and Arc 10.1 Layer files

We have a program that cannot import Layerfiles from 10.1, but instead changes them to 10.0 layer files. I'm wondering if there is any Layer functionality that is lost in this transition. Right now ...
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48 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 ...
2
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1answer
184 views

Openlayers: How to make layer come to top after choosing it in layer switcher?

I have a base layer and 3 image layers . I also have setup a layerswitcher so that user can choose which layer is to be overlayed on the base map and I have 3 sliders such that user can choose the ...
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1answer
265 views

Why does arcpy.mapping.Layer give Runtime error: CreateObject Layer invalid data source?

I want to connect an existing .lyr file to a variable defined as lyr2. lyr2 = arcpy.mapping.Layer(r"C:/Iso100Red.lyr") Although its a .lyr file I´ll get this Errorcode: Runtime error : Object: ...
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1answer
106 views

QGIS Layers Not Lining Up

I am new to QGIS, I have been using ArcGIS for most of my maps. I have two layers that are not overlapping properly. One is a shp file from a GIS clearinghouse and another from a delimited text ...