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.
2
votes
1answer
530 views
Problem with layer order in OpenLayers and Google styled maps
I'm using OpenLayers with Google styled maps. My biggest problem is KML polygon layer which needs to be under roads layer but it isn't (see prtscr). What am I doing wrong?
This is my coding:
...
3
votes
1answer
242 views
What open-source web mapping solution I need to use for this situation?
I will try to explain what I need to do. I have about thirty KML polygons. I need to put them on some satellite map. On the top of these layers (KMLs, satellite) there must go layer with roads. I ...
0
votes
1answer
260 views
How to overlay roads layer on top of all layers in OpenLayers?
I want to put roads layer (from any source, please recommend some..) on top of my KML polygons and base layer:
baseLayer = new OpenLayers.Layer.WMS("OpenLayers WMS", ...
1
vote
1answer
89 views
Symbology for specific values
I want to apply a symbology scheme for the final layer of my model.
Rules are -
All negative - Symbol A
0 - Symbol B
All positive symbol C
unknown - symbol D
I am not sure how I can define these ...
2
votes
0answers
119 views
The layer added did not move in ArcGIS 10
I have a favor to ask. I already done the step that Mr PolyGeo and Aaron gave me from my previous question and it really look great when the layer did match all together. Thank you for that advise.
...
1
vote
1answer
199 views
Why my 'add basemap' data seems taking too long to upload the maps in ArcGIS? [closed]
Can i know the easiest way or any other way to upload Big maps hybrid from add basemap in ARcGIS 10? because it seems taking quite a long time to upload the map like around more than 1 hour and still ...
2
votes
0answers
350 views
legend groups and layer position/order qgis 1.8
I'm tring to programmatically create layer sequence also using groups.
Simple python code:
layer = QgsVectorLayer("004cp000.shp", "004cp000", "ogr")
QgsMapLayerRegistry.instance().addMapLayer(layer)
...
2
votes
1answer
90 views
How to add Checkboxes in Geoserver
I have a POI table with some data of categories like Airport,ATM,Bank etc. I want to show these categories as checkbox so that if I click in the ATM Checkbox, only the ATM Points will be display. Is ...
0
votes
1answer
427 views
Select by Location tool
I am using the Select by Location tool to select certain polygons on my shape-file layer. I start by having a given point as my Selecting Feature and that its relationship is completely_ contains. ...
2
votes
1answer
70 views
Clipping from a given point
I am working with model-builder and I am trying to clip an area around a certain point. Is there a tool that I can use in which I can assign it a certain distance from the point. For instance, if I ...
0
votes
2answers
729 views
How to get names of all layers in a store in GeoServer using OpenLayers
I have strict requirement to retrieve names of all layers in a GeoServer store using OpenLayers. I've gone through the post here, but it doesn't answer my question. I've also gone through GeoServer's ...
1
vote
0answers
261 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 ...
3
votes
1answer
182 views
Repairing disconnected layers with selection sets
Has anyone had any success of repairing disconnected layers that have selection sets that have their data sources broken in ArcGIS? Is there a way to detect this through code and then re-create that ...
2
votes
0answers
44 views
Merging Layers and assigning different values [duplicate]
Possible Duplicate:
Merging Two or More Layers
I am working with three clipped layers that are shown in the TOC. I created these layers from a large watershed shape-file. However, each ...
1
vote
0answers
80 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 ...
3
votes
2answers
54 views
Where to look for oceanographical/environmental data for the Arctic (Baffin Bay/Davis Strait area)
I am looking for oceanographical/environmental variables that are available for Baffin Bay/Davis Strait area over the time period of 1995-2011, however, I am not familiar with ...
0
votes
0answers
115 views
Leaflet Layers Control - Z-Index? [duplicate]
Possible Duplicate:
How to change Leaflet Map panes layering order (z-index)?
In the Leaflet Layers Control L.Control.Layers() described here, is there a way to control the z-index (layer ...
1
vote
1answer
239 views
Applying layer file not formating labels in ARCGIS 10
I'm applying layer files in ARCGIS 10 using the ApplySymbologyFromLayer_management command via a python script tool. The symbology part works fine but the lables are not formatting.
It is my ...
0
votes
0answers
49 views
How to bind layer display?
I work on several layers in arcmap 9.3
My question is about creating binds to display theses layers directly.
like
ctrl+1 ( display / hide layer 1 )
ctrl+2 ( display / hide layer 2 )
ctrl+3 ( ...
2
votes
1answer
519 views
Add AutoCAD .dwg annotation file to Arcmap using python (Same as +ADD Data button)
I would like to add an AutoCad .dwg file to Arcmap using python the same way that the +ADD Data button does.
I can add an Annotation layer with python but only as a feature layer not as an annotation ...
1
vote
2answers
88 views
Fetching field values from uncommitted features on Qgis
I'm trying to fetch a feature's field value on Qgis, I use QgsFeature.attributeMap().value(cont int & key).toDouble()
This works fine for committed features but it always returns " 0 " if the ...
1
vote
0answers
275 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 ...
2
votes
1answer
202 views
How to create new layer within a DXF file?
Using OGR in Python, I'd like to create some geometries within a DXF file, but not in the "0" layer, but in new ones.
I tried with:
import ogr, os, osr, sys
ds = ...
3
votes
1answer
173 views
List Elements or Datasets of a given Layer
I am sorry of this might sound like a noob question but I cannot find any answer from google.
I used arcpy to do batch processing of Network Analyst - Make Service Area layer of thousand of stores.
...
1
vote
2answers
106 views
How to edit several layers simultaneously?
I have the land occupation of an area and a layer for each year : 2005-2006-2007-2008...2010.
Theses are polygons.
There is errors on layers which are common to all of them. For instance: There's a ...
0
votes
0answers
145 views
Want to toggle layers generated from 2 different fusion tables
I have this JavaScript code. I want 2 buttons on the map. 1 to turn layer_2 'ON' and other to turn layer_1 'ON'. Once either button is clicked the other layer should turn off. Also layer_1 needs to be ...
1
vote
2answers
195 views
Its possible to catch ServiceException in Openlayers?
Im trying to catch exception in OpenLayers using vector layers in conjunction with http protocol, its possible to intercept an ServiceException from geoserver ... it will be great to display some ...
2
votes
5answers
1k views
vector layer co-ordinate extraction QGIS
I add my own road vector data on top of Google map using open layers plugin with QGIS. The vector layer is generated using PostgreSQL DB.
Is there any way to extract co-ordinates of a road segment ?
...
2
votes
1answer
507 views
OGR and DXF files: Is it possible to handle layer names? (only “entities”)
I'm using Python and OGR to extract the layers of a DXF file and convert them into SHP.
I began with:
import ogr, os, sys
driver = ogr.GetDriverByName('DXF')
datasource = driver.Open('test1.dxf', 0)
...
2
votes
1answer
295 views
Changing the name of layer using python
I am attempting to change the name of the layer. The following code changes the name of the layer but then removes the layer from the map, and I am not sure why.
Note: I don't have any remove layer ...
2
votes
0answers
271 views
Add CAD Drawing Dataset into ArcMap using Python
I am trying to add an CAD Drawing Dataset into ArcMap using Python.
Question is how to add a Auto-CAD .dwg file to ArcMap using Python
Normally comes in as CAD file within a Group layer with:
...
5
votes
1answer
517 views
How do you symbolize a feature class layer in ArcMap 10 based on one attribute's value and then another attribute's value?
I currently have a point feature class that has a couple of attributes that I want to use to symbolize its layer. One of the attributes is called ExceedsTolerance, which either has "Y" or "N" for its ...
1
vote
2answers
143 views
Add record in related table ArcPad
i have a layer form (named form_layer) containing a combobox and allows to add records into the related table, by showing a form of the related table (named form_table)
When i try to add record ...
4
votes
2answers
336 views
How to copy a group of layers between QGIS projects?
In ArcGIS I am used to being able to have a couple of MXD documents open and copy-paste groups of layers from one MXD's table of contents to another. This can save a LOT of time ensuring consistent ...
4
votes
1answer
325 views
Can QGIS preserve layers?
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 ...
3
votes
1answer
335 views
is it possible to convert 9.3 lyr to 10 lyr
I have a customer who sent me a lyr file in 9.3 and I am using 10, is there a way to import it in. It seems to hang up whenever I attempt to open it!
Thanks
3
votes
2answers
88 views
Unable to turn a layer off in ArcGIS 9.3.1
I was called over to try and fix an issue with a coworkers ArcGIS software (ArcView 9.3.1 SP1, Windows 7) and couldn't fix it. When a certain layer is turned off in the table of contents it never ...
1
vote
1answer
972 views
OpenLayers - How to display selected features as graphic markers?
I'm attempting to render a point feature as a graphic. When that feature is selected I'd like to display a green indicator above the graphic. It seems backgroundGraphic and externalGraphic are ...
7
votes
2answers
849 views
How can I iterate over map layers in QGIS python
I'm having trouble figuring out how to iterate over map layers. I can access the currently highlighted layer in the table of contents via iface.activeLayer() but I want my code to operate on all ...
2
votes
2answers
1k views
Creating new layer from selection in Quantum-GIS
I have been using ArcMap for the last three years. But I am now considering switching to Quantum-GIS. Is it possible to create layers from selection in Q-GIS?
I am using QGIS 1.7.4-Wroclaw.
I will ...
0
votes
0answers
24 views
Layer added event
Is there an event that fires when a layer has been added to the map controls.
I want to lay it down in Startup method :
public void Startup(ref object initializationData)
{
}
1
vote
1answer
185 views
need to show multiple symbols for one point
I am working on a state map of parks with campsites. I want to show symbols for handicap access, tent camping, backpack camping, winter camping, rv camping. I have used a symbol for handicap but it ...
3
votes
1answer
329 views
Can I change properties of several layers simultaneously?
I'm working on bulk data. I have a few hundred GeoTIFF images imported into a QGIS project, and I'd like to modify their layer properties - things like the no-data-value, transparency of certain pixel ...
1
vote
1answer
380 views
How to remove layers of detail from an osm file?
I want to remove some layers from the osm map of an area. It has all the details like POI, offline routing and all. But I just want the map data. How can I remove this extra layer from the map?
0
votes
1answer
246 views
Tiff raster display with polygon layer
Does any body have an idea about why *.tiff images are not displayed when added as raster layer to QGIS after adding a vector layer which has a polygon geometry?
SOLVED !!
In fact the tiff is ...
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