![]() As the name implies, you can scale them up and down freely without losing quality. ![]() This type of graphics is also known as scalable vector graphics (SVG). Because each shape has its own color, vector graphics can’t achieve the color gradient, shadows, and shading like the raster ones (see the next section). Mathematical formulas (vectors) tell each path how it’s shaped and what color it’s filled or bordered. Vector graphics consist of anchor points connected by lines and curves based on mathematical equations. Which option is suitable for your design?.Vector vs raster graphics: What are the differences?.So, understanding these helps you use them smartly in your design and reduce mistakes. Each of them has its own characteristics, positive and negative aspects. Vector and raster graphics are popular terms in design. Input vector map are processed ( layer=-1).Have you ever heard about vector vs raster graphics? Do you know what they are and how they are different from each other? This blog will help you know more about them so that you can improve your design workflow. Remain untouched and attribute data is copied from input vector map toīy default, all features (including features without category) from V.extrude modifies only features geometry. It means that no feature typeĬonversion is applied, points remain still points in the output vector They defines z-coordinate for the features from given parameters or by To v.extrude, these modules do not extrude vector features, Area as a composition of boundariesĪnd centroid is stored as a closed set of faces and kernel whichįor conversion of 2D points or lines to 3D can be Lines and area boundaries areĮxtruded to a set of faces, each segment defines one face. ![]() NOTES v.extrude extrudes vector features which means that pointsĪre converted to vertical lines. Height for vertices is interpolated from elevation raster The elevation model by using individual elevation values for the If elevation parameter is used then 3D vector features follow To faces and areas to volumes (composition of closed set of faces and Points are converted to 3D vertical lines, lines ![]() Convert 2D points to 3D vertical lines with fixed heightĭESCRIPTION v.extrude creates faces, kernels or 3D lines based on inputĢD vector features.Default: -1 cats= range Category values Example: 1,3,7-9,13 where= sql_query WHERE conditions of SQL statement without 'where' keyword Example: income = 10000 type= string Input feature type Options: point, line, area Default: point,line,area output= name Name for output vector map zshift= float Shifting value for z coordinates Default: 0 height= float Fixed height for 3D vector features height_column= name Name of attribute column with feature height elevation= name Elevation raster map for height extraction method= string Sampling interpolation method Options: nearest, bilinear, bicubic Default: nearest nearest: Nearest-neighbor interpolation bilinear: Bilinear interpolation bicubic: Bicubic interpolation scale= float Scale factor sampled raster values Default: 1.0 null_value= float Height for sampled raster NULL values When used with direct OGR access this is the layer name. This number determines which table to use. ![]() Parameters: input= name Name of input vector map Or data source for direct OGR access layer= string Layer number or name ('-1' for all layers) A single vector map can be connected to multiple database tables. ![]()
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