తెలుగులో GIS నేర్చుకుందాం

Arc GIS   for  Beginners Exercise-23 /  How to Search/Find tools in Arctool Box in ARCGIS తెలుగులో   నేర్చుకుందాం

Arc GIS   for  Beginners Exercise-22 / How to create Topolgy in ARCGIS తెలుగులో   నేర్చుకుందాం

Arc GIS   for  Beginners Exercise-21 / How to Add Delete Fields (Batch) in ARCGIS తెలుగులో   నేర్చుకుందాం

Arc GIS   for  Beginners Exercise-20 /  Selecting Features Based on Location / Select Layer by Location తెలుగులో   నేర్చుకుందాం

Arc GIS   for  Beginners Exercise-19 /  How to Create Geometry [automatic creation of lat/longs , Lengths & Areas] తెలుగులో   నేర్చుకుందాం

Exercise – 15 /   How to Create Topology in QGIS Topology Creation Topology describes the relationships between points, lines and polygons that represent the features of a geographic region. With the Topology Checker plugin, you can look over your vector files and check the topology with several topology rules. These rules check with spatial relations whether your features ‘Equal’, ‘Contain’, ‘Cover’, are ‘CoveredBy’, ‘Cross’, are ‘Disjoint’, ‘Intersect’, ‘Overlap’, ‘Touch’ or are ‘Within’ each other. It depends on your individual questions which topology rules you apply to your vector data (e.g., normally you won’t accept overshoots in line layers, but if they depict dead-end streets you won’t remove them from your vector layer). QGIS has a built-in topological editing feature, which is great for creating new features without errors. But existing data errors and user-induced errors are hard to find. This plugin helps you find such errors through a list of rules. It is ve...

Exercise – 14 /   Select by Location in QGIS Select by Location Spatial queries are core to many types of GIS analysis. Spatial queries allow you to select features in a layer by their spatial relationships (intersect, contain, touch etc.) with features from another layer.  The criteria for selecting features is based on the spatial relationship between each feature and the features in an additional layer. Add Polygon/Line/Point Layer to Layers panel Figure 153 - QGIS canvas with Line, point & polygon layers loaded Choose Vector → Research tools → Select by Location Select features from (Line / Point / Polygon) for selection Choose the relationship with other features from other layer with intersect, contain, touch, with in etc. Select comparing feature. Select options from modify current select by create new selection  add to current selection selecting within current selection removing from current selection Click on Run and close select by location windo...