The visibility tag has no wiki summary.
10
votes
3answers
654 views
How to calculate the visible sky percentage
Hi I am writing a project and I am stuck: can anyone explain as simply as possible how to calculate the visible sky percentage?
I have done a satellite survey and have worked out the height of ...
5
votes
2answers
1k views
Viewsheds and Observer Points in ArcGIS Spatial analyst
I am trying to understand the viewshed and observer points tool in spatial analyst.
I want to show which areas of land can see a wind turbine, or put another way, from where can the wind turbine be ...
5
votes
3answers
115 views
How to Display Overlapping Lines?
I have multiple line layers that represent bus routes and many of the routes overlap (i.e. near terminals, transfer locations, etc.) Is there a function in Qgis which will display both features ...
4
votes
3answers
895 views
openlayers toggle visibility of layer
EDIT: I have cross-posted this to Drupal Answers. I hope this isn't too much against the rules --- I think the answer will be something to do with both Drupal and OpenLayers.
...
4
votes
1answer
70 views
What's the best way to run a visibility analysis in PostGIS 2?
I am looking for the best way to run a visibility analysis in PostGis 2, i.e. given 2 points and obstacle polygons, are these 2 points visible from each other ?
I did not find anything relevant for ...
2
votes
0answers
215 views
Layer visibility using maxscale minscale not working
I'm using Openlayer and Geoserver.
I have a series of layers that have a scale parameter like: 1:50000-1:25000 where 50000 is the max scale while 25000 is the minscale.
I have a map like in this ...
1
vote
0answers
71 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);
...
0
votes
1answer
92 views
Control visibility of multiple layers
I am displaying multiple feature types using one layer in OpenLayers, like here:
var **vector** = new OpenLayers.Layer.Vector("My Layer", {
maxExtent: new OpenLayers.Bounds(-1.09863,44.42907, ...
0
votes
0answers
146 views
how to turn on a group layer when a sublayer is turned on in Flex Viewer
I have a map server with layer structure like this:
-A (GroupLayer)
--AA (SubGroup)
--AAA (Feature Layer)
When I set AAA.visible=true, I need at least AA get turned on too.
I got my code like ...
0
votes
0answers
125 views
How to calculate visible sky percentage [duplicate]
Possible Duplicate:
How to calculate the visible sky percentage
i have done a sattelite survey and have worked out the height of buildings and the distance between them how do i use that ...
