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I performed a supervised land-use classification with Erdas. Landsat data was used in ArcGIS to Digitize urban areas as polygon shapefile. I want to insert these polygons into the land-use raster data. How can I do this with ArcGIS? أكثر...

Thermal Remote Sensing of Active Volcanoes: A User's Manual Book Description Publication Date: June 10, 2013 Encapsulating over one hundred years of research developments, this book is a comprehensive manual for measurements of Earth surface temperatures and heat fluxes, enabling better...

Measurements for Terrestrial Vegetation Book Description Publication Date: May 20, 2013 Measurements for Terrestrial Vegetation, 2nd Edition presents up-to-date methods for analyzing species frequency, plant cover, density and biomass data. Each method is presented in detail with a full...

Advanced Structural Damage Detection: From Theory to Engineering Applications Book Description Publication Date: May 20, 2013 Structural Health Monitoring (SHM) is the interdisciplinary engineering field devoted to the monitoring and assessment of structural health and integrity. SHM...

Solar Energy at Urban Scale Book Description Publication Date: March 4, 2013 Increasing urbanization throughout the world, the depletion of fossil fuels and concerns about global warming have transformed the city into a physical problem of prime importance. This book proposes a...

I have two rasters, one with thematic data, and the other with continuous data (floats). I am trying to calculate/determine the the range of float values associated with the different classes in my thematic raster. For instance, in my thematic raster, I have a class A. If there are 5 cells in...

I'm georeferencing an image in QGIS, it shows up fine on the georeferencer and goes to about the right position on the map where it's supposed to. But as you can see below, the image shows up as a black box. Any suggestions for a fix? Thanks - أكثر...

I have a land cover layer from which I've extracted the tree canopy class and set all values that are not tree to NULL. I've also converted it to a vector and exploded it to make single part features. I want to classify each patch into "small" (being very small trees along streets or in...

I have a polygon layer representing a habitat type and another polygon layer representing water features. I want to be able to assign to each water feature whether it shares a connection via a habitat polygon with another water feature or not (within a distance radius). A complication is that...

I am trying to create a map of forest type diversity with ArcMap. I have a polygon forest layer with the different forest types as attributes (e.g. 0815, 0862, 0813, ..., which stands for 'mixed forest', 'oak forest', and so on.) Using Patch Analyst I have created a Hexagon map and intersected...

I have transformed a *.dxf-file into a polygon shape-file. In many of the polygons i have lines whicht do not belong there but i can not delete them as i normally delete vertices on polygons by selecting it and pressing the delete key. Here an Image (the lines which i want to delete are circled...

I am looking for some advice on how to calculate the distance from a point to a different class of a raster. Specifically, I have observations (points) of animal use overlaid on land cover data. For each point I want to calculate the distance to the nearest cell of a different cover type...

I am trying to create a script tool to automate this process, eventually it will be used for batch processing but at the moment I can't even get test data to work. This is pretty basic at the moment, and I know it can be done through ArcGIS, but I would like to develop a python script for...

using python in ArcGIS, I'm trying to combine the ExportReports function with the DataFrameTime object. For every date interval, an image of the Layoutview is exported and all the visible layers are supposed to be saved in the report.I am able to get the images to match the dates, however the...

When I do a batch command in ArcGIS e.g. Projection transformation the batch dialog has a field for the "new file name". However, the default Directory is always the same folder as the original files. If I want to change the Directory but keep the old names, then there is a strange syntax...

I have ArcGIS Desktop with the ArcInfo license level. I want to know if I can configure ArcSDE, so that I can work with versioning of geodatabases? The ArcInfo license level is now known as the Advanced license level (since ArcGIS 10.1 for Desktop). أكثر...

I have a cities shapefile and a counties shapefile. I have the counties shapefile imported to a PostgreSQL table. I haven't transferred my cities to PostgreSQL yet, but the issue I really want to figure out is how do I create a third table. Since cities and townships often overlap several...

I am looking for data sources/shapefiles (demographics, cities, infrastructure, transportation, land cover, geology, etc.) for the state of Madhya Pradesh, India (specifically the Dewas or Khargone districts near Indore) and wondering if anyone has suggestions for good (re: free) sources for...

I'm from Colombia, South America. I'm a computer programming student and I have to develop a prototype for a GIS system for my small home town using Postgis >= 2.0 as database back-end. The local public works office gave me the old Arcgis shape files: one for urban roads, one for rural roads...

Solved, reading mail-archive I can understand that there is a conflict between: gt-epsg-wkt-9.2.jar gt-epsg-hsql-9.2.jar I tested removing each one, with 'hsql' I get the same wrong result, but with 'wkt' the result is apparently correct: POLYGON ((1008607.2669034603 934072.2524703469...