The process of generating an image from a model.

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2
votes
2answers
122 views

Rendering a map in QgsComposition on Win 7 / 8 in QGIS 2.2.0 with QgsComposerMap gives blank map

I'm writing a plugin for QGIS 2.2.0 which should render a pdf file with a map and some text. The code is working under Linux (current Arch) and Windows XP, but it's not working on Windows 7 or 8. ...
0
votes
0answers
153 views

Can OpenLayers2 render a completely custom font-face in a text or point symbolizer?

I am trying to style a feature using a custom font. Geoserver has an extension allowing external graphics in SLD to be defined by a font. OpenLayers doesn't appear to support this particular ...
1
vote
1answer
463 views

Setting a renderer that uses a function for a dynamic layer in ArcGIS JavaScript API

How can I, if possible, set a renderer for an ArcGISDynamicMapServiceLayer which uses a function to determine feature values instead of just attribute values? When using the following code, the ...
0
votes
1answer
172 views

QGis: scripting the map rendering (multiple similar maps from one shapefile)

I would like to ask for advice on creating a Python script that will provide the opportunity to render a plenty of similar maps (with the same extent, projection, layout, color scheme and composition, ...
0
votes
0answers
68 views

ArcGIS JavaScript problem with legend to show attributes

I'm running a geoprocessing task in my webapplication. When the task generated some results i destroy an existing legend and build up a new one that shows the legend for the resulting layers. That is ...
3
votes
2answers
48 views

How to control how points are displayed across different programs

I'm completely new to GIS, but I'm trying to control how Points are displayed (shape, color, size, etc) across different programs (ArcGis, qGis, etc). Is there a way to control the rendering of ...
1
vote
2answers
320 views

QGIS: drawing order of lines and polygons (line between polygon)

I have 2 layers. One with forests and lakes (polygon) and one with rivers (line). Now I want the features to draw in that order: The river have to be UNDER the LAKES and the forest have to be UNDER ...
1
vote
2answers
56 views

QGIS 2.0 How can i get a precisely Rendering time?

I work with QGIS 2.0.1. I have a large number of raster data files and i selected different methods to represent them. Method: Import all raster data as individual files Method: Generate a single ...
3
votes
1answer
117 views

Why does Save as “Rendered Image” change the raster styling?

Rasters exported from QGIS (via Save As > Rendered Image) do not retain original styling. See attached. Any thought on how to prevent this error? The top image is exported from QGIS as a .bmp, the ...
2
votes
1answer
802 views

How to use PyQGIS ( Python QGIS API ) to open/close Update Drawing Order checkbox in QGIS2's Layers (Legend Interface)

Thanks qgis 2, the Legend Interface (layers dockwidget) now has Update Drawing Order check box on right-click mouse context menu. I think this feature can let user temporally closes rendering, then ...
2
votes
0answers
211 views

How to use CropCoverage Render Transformation in Geoserver SLD (WPS)? [closed]

I have yet to find an example on the web (or in code) of anyone using the "Crop Coverage" Render Transformation from a Geoserver SLD. Does anyone have an example or at least be able to point me to ...
1
vote
0answers
162 views

How to create a color ramp to change the color of a svg image in arcgis javascript api

I have a svg image to create a PictureMarkerSimbol for a feature. How to create a color ramp to change the svg color based on a criteria, like a attribute on my feature? The ideia is like that: var ...
0
votes
1answer
89 views

How can i stop rendering Qgis

In my python plugin ,i select features from a vector layer dynamically using a loop and executing : VectorLayer.select(feature.id()) when i start the loop, the selection become very slow because ...
1
vote
1answer
262 views

How to automate creation of PNG maps using Python?

I have a project with 50 vector layers and I have done custom styling for them. Now I want to make around 30 png files with different xmin, ymin, xmax, ymax. The output size (png) should be width ...
2
votes
2answers
170 views

How do I produce map images for Wikipedia?

I would like to make several map images (e.g. SVG or PNG) like those on wikipedia but in not popular projection. I am interested in scripting solution. Here I found this note: Generation Notes perl ...
3
votes
1answer
2k views

Manually building a tile server

I use this instruction http://switch2osm.org/serving-tiles/manually-building-a-tile-server-12-04/ I have the problem on the step "Starting your tileserver" sudo mkdir /var/run/renderd sudo chown ...
3
votes
1answer
219 views

Dynamically rendering polygon, point, and line features

I have a Feature Collection consisting of features having id, color_code, etc as attributes. I have to render this feature with the color in the color_code attribute. Is this possible and please ...
3
votes
2answers
2k views

Google Maps/ OpenLayers only rendering top left tiles

I'm seeing a weird issue with Google Maps and OpenLayers. When loading a page as shown below, only the two top-left tiles render, leaving the rest of the map blank. I looked in the Network tab in ...
2
votes
4answers
229 views

Render a map showing lots of individual traces/routes simultaneously

Google's "My places" is great for showing lots of traces (in my case, paths representing bike rides I've done). But it only shows 20 or so per page. I'd really like a map (a statically rendered .png ...
1
vote
0answers
88 views

GeoExt Feature Renderer

I am working with OpenLayers and GeoExt and I have the following problem: I have a point vector layer and I want to create a style that contains 2 symbolizers. In this example they show how this ...
0
votes
1answer
318 views

Does tile server renders every request?

I am trying to understand how tile server handle requests. I red about Mapnik which "creates" the map using OSM, Does "creates" means that every request is rendered and returned? If yes what is the ...
1
vote
1answer
1k views

Why won't GeoServer render my SVG symbols?

I'm trying to use GeoServer to render a point layer with custom symbols. This worked perfectly well when my symbols were PNGs, but we haven't decided exactly what size our symbols should be, so I ...
3
votes
0answers
199 views

Can you set a QGIS print composer to render the map as default?

I have set up a number of templates for the print composer in QGIS. In the Print Composer, there is the option to have the map image displayed in 3 ways: as a blank rectangle with no updates until ...
3
votes
1answer
460 views

How to control the rendering priority/order of feature layers?

I am displaying polygon, line and point feature layers on a button click event and adding layers in order based on their geometry type, e.g.: polygon -> line -> point. In certain cases layers are ...
0
votes
0answers
131 views

How to access the rules of QgsRuleBasedRendererV2 using python?

I can't get access to the rules of rule-based renderer, python says there's no attribute "rootRule", though documentation says it should be (http://www.qgis.org/api/classQgsRuleBasedRendererV2.html) ...
2
votes
1answer
512 views

Apply QGIS Style to osm-File like in Open Cycle Map, Landscape Base-Layer

I try to mimick a rendering style like in Open Cycle Map (landscape base layer) in QGIS. However, I'm not able to find certain elements (i.e., wood and rivers) that are used in Open Cycle Map but seem ...
4
votes
1answer
188 views

How to render features with different symbols depending on in memory data?

We are developing a complex ArcMap extension software which contains class extensions, a workspace extension and some ArcMap extensions. The purpose of the software is to link our existing management ...
6
votes
1answer
2k views

How to Optimize Openstreetmap Tile Rendering?

I am currently trying to render Water (3,198,333 records) and detailed world borders (processed_p) for the world. I am successful in rendering both layers, but I am not happy with performance. My ...
4
votes
1answer
466 views

How to use scale -rule based renderer in QGIS?

I wish to render a shapefile of builindings such that at scales below 1:5000, they have a border, and above 1:5000, they do not have a border. For this, I went into layer properties, selected ...
1
vote
0answers
70 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 ...
1
vote
0answers
72 views

esri.tasks.GenerateRendererTask for non 10.1 ArcServer

I wish to use the same features as the esri.tasks.GenerateRendererTask but it seems that it can be only used on ArcServer 10.1. Is it possible to achieve the same dynamic natural jenks breaks in the ...
1
vote
2answers
1k views

Using render_list to render only map extract

I am trying to render an area where I have added an extract from the planet file with render_list. The command I am using is render_list -x 159 -X 179 -y 160 -Y 410 -n 2 ...
3
votes
0answers
242 views

Symbolizer with external GIF image is not rendered pixel-perfect

We want to pinpoint some locations on a map with some external GIF symbolizers. The issue we have is visible in the attached image*: looks like somethings happens on a sub-pixel level, so that the ...
3
votes
2answers
6k views

How can I display this polygon in Google Maps, properly

NOTE: this question is sorta like a follow-on question to this original GIS Question I asked. In that question, the main suggestion was that I was trying to show two polys. Now, I'm asking about a ...
2
votes
3answers
733 views

MapServer - map rendered at the wrong angle

I've just started using MapServer to check the topology in my database, and whenever I render a map I have to flip the image vertically and then rotate it quite a bit to get it facing North. I've set ...
4
votes
1answer
552 views

How do I know when to use a map server or a tile server?

I'm new in GIS tech and I still have some questions about GIS. I wanted to know why to choose a map server (mapserver, geomap) instead of a tile server (tilestream, tilecache or tilestache) + tile ...
4
votes
1answer
192 views

Is it be possible to re-render parts of a tile pyramid when postgis table updates?

I have this idea of using postgis together with a tile renderer for serving my organization with tiled maps. As I believe my data will be partially altered almost on a daily basis it does feel like a ...
1
vote
2answers
530 views

Need help getting started with QgsComposition

I am using QgsComposition for the first time, but I fail at the first step :-( mapRenderer = iface.mapCanvas().mapRenderer() line 31, in mapRenderer = iface.mapCanvas().mapRenderer() ...
2
votes
2answers
492 views

QGIS Newbie Rendering Time

I am new to QGIS and have just installed 1.8.0 on a Gateway laptop that is about 2 years old. It is running Windows 7, has an Intel Core i3 2.13 GHz processor, 4 GB of RAM. I've just brought in my ...
8
votes
4answers
1k views

Fastest spatial storage format?

I am wondering what storage method will result in the fastest reading of the map vectors for rendering. SHP? PostGres? SQLite? (They do not change often and I do not need spatial functions for these ...
2
votes
2answers
485 views

What is the compression gained by caching mod_tile's metatile instead png tiles?

What is the level of compression gained caching mod_tile's larger metatile instead of 256 by 256 .png tiles? I am trying to determine the extra cost of storage resources for pre-rendering some set of ...
3
votes
1answer
3k views

How to filter features in a layer?

I am trying to display certain features in a shapefile-based layer using QGIS. I have found the subset function in the properties panel, which does exactly what i want, but is too tedious given that I ...
2
votes
0answers
173 views

Rerendering OpenLayers in JSF2

did anyone try rerendering OpenLayers in JSF2? I am using a4j:ajax events, I mark the render atribute with render="map" where map is naturally the id of the openlayers div tag, and I use ...
1
vote
0answers
196 views

How Do I Capture when the Cluster Rendering is Completed

I have a graphics layer that draws clusters using the sample custom cluster from ESRI. http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#CustomClusterer We have a Busy Indicator that we ...
2
votes
0answers
573 views

Implementing custom IRenderer for ArcGis 10.0/WPF

EDIT: Updates in the bottom As a followup to my earlier question, I'm trying to implement custom symbol rendering for my WPF/ArcGIS application. I'm accessing layers that have been published on the ...
19
votes
3answers
5k views

Optimal video cards for GIS programs

I recently purchased a Dell XPS-8300 (i7-2600|16 GB DDR3 RAM|64-bit Windows7) which I intend to use primarily for GIS programs. I bought a refurbished model because it was much cheaper and because I ...
3
votes
1answer
869 views

OpenLayers polygon fill on IE has black shading

I have an odd problem on with OpenLayers on IE6, IE7 and IE8. A newly drawn polygon has odd black shading. In fact, even the line (stroke) has the same black outline. Works great in Firefox, ...
2
votes
4answers
727 views

MapServer rendering at the lowest zoom levels

I am developing a web mapping application based on OpenLayers and using a WMS layer from MapServer (the source data for this layer is stored in PostGIS database) and I am facing the following problem: ...
1
vote
2answers
863 views

Can you reorder a classified vector layer in QGis?

I have a GML file that I'm displaying in QGis - it contains a set of contours and they are written out in such a way that the lowest contour (largest polygon) is drawn last thus covering up all the ...
3
votes
0answers
280 views

IUniqueValueRenderer on Polyline and Points made my Features all invisible

I am currently using IUnique value renderer like this: foreach (string nodeType in nodes) yield return new KeyValuePair<string, ISymbol>(nodeType, CreateNewSymbol() ); public static ...