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LEGEND (System for Automated Geoscientific Analyses) is an open source geographical information system (GIS) used for editing and evaluating spatial information. It consists of a big number of modules for the analysis of vector (point, line and polygon), table, grid and image data. Among others the package includes modules for geostatistics, image classification, forecasts, simulation of vibrant processes (hydrology, landscape development) and surface analysis.
Contents To run legend GIS on the Live DVD, open the Desktop GIS group on the Desktop and click on the legend link. When opening legend for the very first time, you are provided with 3 subwindows: the Manager, the item Residence and the Messages window. The info in the things residential or commercial properties window will change depending upon your choice in the Supervisor window.
Try closing one of the windows to get more location for your map. You can reveal closed windows again in the menu. Open the legend GUI and fill the grid/ home/user/saga/ via the menu. You will get a message in the General tab of the Messages window relating to the success or failure of this job.
When you packed the dataset, it will show up in the Information tab of the Work area window. It will be listed under Grids and the grid system it belongs to. In this case, the grid system info will appear like. The very first number is the cell size (30 meters), the next 2 numbers show the variety of cells in x and y direction respectively, and the last two numbers are the origin of the grid.
This, and some more beneficial information on the dataset reveal up if you pick the Description tab of the Characteristic window. As soon as you click the tab, you will see not just more in-depth information on the grid system, however likewise the Value Type of the grid (here FLOAT), the Worth Variety, some analytical measures and the Memory Size.
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Try this with one of the datasets in the ***/ home/user/gdal _ natural_earth/** folder. To show the dataset in a map view: Double click on the dataset in the Data tab of the Work area window. A new Map window will open with the dataset displayed. The canvas is framed: leading and left the x- and y-world coordinates are displayed.
Try moving the mouse guideline over the map and enjoy the x-, y- and z-coordinates showed in the bottom bar of the SAGA GUI window. The z-coordinates displayed correspond to the elevation worths of the dataset (be mindful that the worths displayed are always those of the dataset picked in the Data or Maps tab).
The Zoom tool is chosen by default. A left click on the map zooms in, a right click zooms out.
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Take a look at the other buttons in the tool bar: these permit you to zoom e.g. to Complete Extent. Tip Legend zooms very quickly, if you are lost while searching your data, click the 'Zoom to Complete Extent' button in the toolbar We will enhance the map display screen by computing a shaded relief map.
Now pick the Analytical Hillshading module and after that select the Settings tab of the Properties window. This will appear the module parameters (also take a look at the Description tab, which will display more info about the module and its criteria). Click in the right column of the Grid system specification (where [not set] is shown) and choose the grid system of the Mt.
Helens dataset (). Next click into the ideal column of the Elevation criterion and choose the dataset. Click in the ideal column of the Shading Technique choice and select Requirement. Now press the Apply and after that the Execute button. A new dataset consisting of the hillshade will be computed. Take a look at the Data tab of the Work space window - you will discover the newly created dataset.
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This will display the dataset in a new map view. After examining the dataset, close the Map window by choosing Close from the Window menu. Now double click on the hillshade dataset once again, but select the Map consisting of the elevation dataset in the dialog turning up (Include layer to selected map).
