A representation or description of a scene, typically produced by an optical or electronic device, such as a camera or a scanning radiometer.
0
votes
0answers
12 views
Read Pixel Color of georeferenced image and get LatLng [migrated]
I have a colored georeferenced satelliteimage and would like to find out what color has which pixel at which position.
All I have is the georeferenced image and average programming skills in php and ...
0
votes
0answers
21 views
GDAL: add metadata to Bands when creating new GeoTIFF
This is a metadata question :-).
I am processing airborne laser scanning full-waveform data to extract information and I store this information by creating a multiband GeoTIFF using GDAL. I will have ...
3
votes
1answer
37 views
circle detection on binary image
My image is gray scale image which i have converted to binary by smoothing and then edge detection method. Now i want to place the circle /ellipse on edge detected. I don't know how to proceed ...
3
votes
1answer
48 views
Best way to create a georeference and projected data from a hand-drawn maps of mythical village for use in spatial stats training modules
I am preparing datasets for students in a spatial statistics course for a module on spatial autoregressive models. We will use ArcGIS 10.1. The first dataset will correspond to a mythical ...
1
vote
1answer
29 views
Is there any “proper” way of setting the viewport for QGis Time Manager?
I'm working on video visualisation for some geo data. Everything works fine for me except the viewport that the time manager plugin is using for image frames. It makes image frames size of actual map ...
1
vote
2answers
163 views
Merging many rasters using Python
I have a list of many many rasters. I want to have a simple and easy to understand script that takes this and merges it into one big mosaic. I found a similar question but the accepted answer adivises ...
1
vote
0answers
40 views
proportion of image layer in OL
I tried create map with single image used OL.
But I have a trouble: image in map has a wrong proportions.
Img: 1540 x 1481
Img in map: 2858 x1481
My js code:
$(function (){
var map = new ...
0
votes
0answers
23 views
Attempts in C++ to read only a window of a raster fails using RasterIO. Can Help?
Under C++: I can read a raster image just fine if I read the whole thing one line at a time using RasterIO. If I follow the documentation fr reading a window, however, I get error messages that make ...
0
votes
0answers
32 views
how to convert the L1G raster file to geo tiff,
I have downloaded I mage from GLCF, its in LG1 format, how I can process that image in erdas software, or is there any methods to convert it into geo tiff,
0
votes
2answers
78 views
QGIS 1.8 crashes when exporting from print composer to image on Windows 7
My question is similar to QGIS Crashes when writing to PDF.
Today, when I try to export to image, QGIS crashes. I've tried opening a new composer to no avail.
This is the problem signature:
Problem ...
2
votes
1answer
61 views
Determining the transformation between a satellite image and long/lat
I'm trying to overlay some data onto a satellite image of the UK.
The image is a hi-resolution version of the image below (originally from dundee university):
...
1
vote
1answer
103 views
How to add images in CartoDB infowindows
Can't seem to get the default site to display images.
I've added hrefs to a image column. example;
I've dragged the image column to the top of the infowindow sidebar app and it still just displays ...
0
votes
0answers
97 views
Open Layers override class or method in Android 2.3
I'm implementing my own image loading mechanism for openlayers, because lack of functions in android 2.3 webview. It will get cached images from android db.
I wan't to override ...
0
votes
0answers
15 views
1
vote
0answers
46 views
Question for MOD35 cloud mask
I have a question about processing MOD35 cloud mask image.
I worked reprojection on MOD35 cloud mask image using MODIS Swath Tool.
The processed results of MOD35 cloud mask are consist of 6 band ...
2
votes
1answer
110 views
How to Determine to world map size in pixel given this data?
How to Determine the world map size in pixels given this data?
Map size of a particular area say, for example:
Makati city, Philippines with bounds:
Top-Right: 121.0281, 14.56497
Bottom-Left: ...
3
votes
1answer
128 views
Relative Hyperlinks in QGIS without end user's software dependency
I am trying to work out how can I add a relative path hyperlink to a shapefile in QGIS. I have found several great tips on various forums but only one has so far potential to be implemented. The ...
3
votes
1answer
47 views
How to load multiple images with the same CRS?
When I add several images to QGIS 1.8 it asks the coordinate reference system for each one. There are several seconds in between the dialog and it is not easy to just continue working as the dialog ...
2
votes
2answers
183 views
Is it possible to add a simple image or graphic to the map canvas?
Is it possible to add a simple image or graphic to the map canvas in QGIS (e.g. a symbol marker)?
4
votes
2answers
189 views
How do I Capture GDAL projection and create matching output (OGR or GDAL) shape files?
Working in C++, using GDAL and OGR: Depending on what the user has supplied for image input, I need to output point (or other) shape files in the same projection as the input raster images. The ...
5
votes
2answers
227 views
How to display a lot of images with OpenLayers?
I would like to display a lot of images at same time. The images are georeferenced (they have extents), with some labels on top of it which, on click, open popup. I can not say how many exactly ...
0
votes
0answers
92 views
Failing image opacity with OpenLayers and IE8
To describe it in a few words: I have an Image Layer as overlay, defined with 0.5 opacity. After zooming in to zoom level 11, the image becomes opaque. After that point, there is no way to change the ...
1
vote
0answers
50 views
How to correlate Image DN with Spectrometer reflectance?
I am trying to develop a system to measure NDVI from the commercial grade digital camera.
I am trying to get two bands NIR and RED from the image and apply it for NDVI measurement using diffent ...
3
votes
2answers
213 views
How to save MapServer output to a file?
How can I save the results from a MapServer file as an image? I would like to be able to write a png file as a result of a query. My query which I can display in browser is the following:
...
3
votes
1answer
146 views
ESRI/ArcGIS draw protractor
I am using ArcGIS maps and trying to follow JS API. I am trying to understand how can I add a protractor on the map which will help in angles while drawing polygons. I understand I could add a Feature ...
4
votes
0answers
330 views
I have a Web Application (ASP.NET) made ​​in ArcGIS Server Manager. How to create a button for the user to export his vision for PDF / Image?
I am using ArcGIS Server Manager to create Web Applications (ASP.NET).
I would like the customer to access has an option to export your vision to PDF or Image, or both.
I would like to generate the ...
3
votes
3answers
353 views
Merge DEM and Hillshade to create one file?
I am wondering if I could merge DEM and Hillshade ? What is the pro and cons for that? Thanks
3
votes
2answers
107 views
What Information Does the Blue Band Provide?
I am playing around with ERDAS and was implementing image difference on two rasters separated by interval of time. I was using a blue band raster and I created a default threshold for percentage ...
2
votes
1answer
457 views
Convert X Y Pixels to Easting Northing
Hopefully someone can help.
I'm trying to find out what the formula would be to convert the X, Y of an image to the Easting and Northing coordinates.
I've downloaded some of the raster maps from OS ...
2
votes
0answers
126 views
Automated testing for GIS apps
There are several commercial and opensource tools for regression automation. While many of them could be employed to test GIS apps, they fall short, at times, dealing with the unique characteristics ...
0
votes
0answers
68 views
White nodata values instead of black
I have a problem. I cut a map on tiles using gdal_csharp.dll library (working on gdal_retile.py script rewritten into C#). Everything works fine except one case. When I cut areas with nodata values ...
1
vote
0answers
232 views
How to add multiple images to a Google Earth placemark?
I have a large number of Google Earth placemarks and 3-6 photos corresponding to each one. I would like to insert the photos into the properties of the placemark so that when the placemark is ...
0
votes
1answer
260 views
How to define image map with pins in Javascript?
I have image map in .png format. All I need to do is to add a sidebar where users click on for example "restaurants" and pins with restaurants will show on an image map. When user mouseover a pin, it ...
1
vote
2answers
709 views
How to display a image from Postgres database
I have Images in bytea form in PostgreSQL/PostGIS database, i want to display them in a webpage using PHP - PostgreSQL.
I got lot of examples and I worked out but not getting output from them...
Few ...
1
vote
1answer
625 views
Export georeferenced image into Google Earth
I have created a georeferenced image as instructed in this fine tutorial: http://qgis.spatialthoughts.com/2012/02/tutorial-georeferencing-topo-sheets.html
Now I would like to get this image into ...
2
votes
1answer
97 views
Adding images to placemarks multiple times
I have a route that I travel that is saved by coordinates to a .csv file for use in GE. I have images (pictures) that I would like to add to placemarks I have along the route. Is there a script or ...
0
votes
1answer
149 views
how to integrate external image processing programs within ModelBuilder
I want to use python libraries to do image processing for very large files (over 2GB), but the current python libraries can not read 16 or 32 bit image correctly. At least, I tried Python Image ...
6
votes
1answer
506 views
Creating a mask with transparent pixels in python
I have a geotiff image with pixel intensities ranging between certain values. Lets say bewteen -2 and 2 (the image is normalized). I have a certain threshold which interests me, lets sat 1. I would ...
2
votes
1answer
392 views
How to have a layer with many images that scale?
I know that in OpenLayers you can add Features to a Vector Layer which each have image but then they will not scale (i.e. their size stays the same independent of the current zoom) or at least I do ...
2
votes
1answer
220 views
Added PNG dissapears when I export/print map
Ive added a PNG image of a chart to my map and when i try to export as any image file or print the map the PNG image is not there. Im using arcmap 9.3. in layout view im adding image which ive tried ...
2
votes
2answers
1k views
help displaying jpg in openlayers?
I am trying to overlay a jpg image over an openlayers map. I have been to the example on their site and looked all over for a solution with no luck. So I am guessing that their are rules for setting ...
3
votes
0answers
118 views
How to read pixel values from an image server layer with ArcObjects?
I'm having a problem with reading pixel values from the image server layer. The image server layer class implements IRasterLayer, so when I tried to read pixel values using IRaster2 obtained through ...
1
vote
2answers
541 views
How to add pictures to OpenLayers map using GeoServer?
I have web map showing land parcel and buildings.I am using GeoServer WMS and OpenLayers.
My buildings are showing as point on map.Then I want to add some images to those points to show when ...
1
vote
1answer
1k views
How to display pop up image when click point in open layer web map
I have basic WMS web map showing parcels and points layer which representing buildings of parcel.Then I want to add building images for each and every point. Then when a user clicks on a point image ...
1
vote
0answers
103 views
How CONVERT a lat/lon point TO a x/y point ON a world mercator proj image in JS?
Thx to read and think about my problem! :)
I have a map world image like that (mercator proj):
http://www.learnnc.org/lp/multimedia/14596
And I have a lat/lon point to place on it in javascript, I ...
1
vote
1answer
670 views
Overlay the big map image with Google Maps API
I put the image on my website with overlay option in Google Maps API. But the map image which is overlayed is too big: 2.85 MB. I can't resize it, so I wonder is there an option to put it somewhere on ...
0
votes
2answers
60 views
Need Image with Sweref99_1800 projection/coordinate system
I need third party image tiles (probably world imagery) under sweref99_1800 projection and coordinate system (EPSG 3008). I found this link ...
0
votes
0answers
63 views
Changing projection of base layer
normally we change projection of vector data for displaying it over google base map. Similarly is it possible to change the projection of base image tiles map? if yes, how we can do that, any ...
