I want to convert several images into polygon shp files using QGis (Quantum GIS 1.6). I need to do edge detection AND differentiate between several different colors of lines (red, green, yellow and b
I\'ve created a script to create a spatial index of all rasters and it worked fine when run in a single directory but when I tried to ammend it to run on subdirectories as part of an os.walk it starte
I have some high quality LiDAR data. I need to process it dynamically, and update a field (not elevation field) depending on my input and elevation at that point. Once this is done, I need to display
I am using QGIS software. I would like to show value of each raster cell as label. My idea (I don\'t know any plugin or any functionality from QGIS which allow to it easier) is to export raster using
This might be a simple problem but I can\'t manage to solve it. I\'ve got this heightmap which I need to process. I must allow the user to trace a vector over an image, indicating which \"line\" of开
How can I improve the legend of spatial raster map plot using ggplot when compared to a spplot() legend?
My system config is OS X with GhostScript 9.02 I would like to know (step by step) how to add and configure the file in GS that make p开发者_如何学运维ossible to do substitutions for fonts.
I am using imagemagick/php to make a jpeg file from a PDF. Input PDF file: PDF-file Output Jpeg file: Jpeg-file
I have a byte[] array that contains BGRA raster data (e.g. first byte = blue component, second = green, fifth = next pixel, blue) and would like to play with it.
I noticed some weird behavior when resizing the plot window. Consider library(sp) library(rgeos) library(raster)
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