vector versus raster

1. What is raster data and what is vector data?In GIS, for the classification of data format, we usually divide it into two types: raster data and vector data. Raster data is a cell that considers space as discrete and is expressed by a two-dimensional array or other data or

First, define some concepts and describe some facts: What is raster data?Raster Data is a data expression that splits two-dimensional planes into cells. What is vector data?Vector Data refers to the data expression of shapes and images in the basic entity element (primitive. The Google map product line can be subdivide

GISThe research data is geospatial data, which is the root cause of the difference from other systems. Raster Data and vector data are the most basic spatial data organization methods in geographic information systems. Raster Data is a two-dimensional matrix that represents the data organization of spatial objects or phenomena. each matrix unit is called a cell

Many times, we need to get the raster data of the vector data region corresponding to the cell statistics (averaging, summing, etc.), and then assign the obtained statistics to the vector layer's attribute table, in ArcGIS operation as follows: (PS: The first time to write technical articles, hope that we have a lot of understanding and support, the DA) 1,

Aoi, area of interest, that is, areas of interest. It is often used in ERDAS. Conversion of common SHP files of ArcGIS to AOI files: Open the viewer window, load the. SHP file, and select the area to be converted in the window. The area is highlighted, Click Copy selection to AOI under the AOI menu, Select save AOI layer as... under the File menu to save it as a. Aoi file. Crop the grid with Vector Data: (1) In ERDAS: Ensure the SHP is consistent wi

Here is the vector layer loading method, because the layer itself is already produced by the Mxd class project file, so directly using the Mxd loading modeIf(Axmapcontrol1.checkmxfile (Shpfile))//determine if an mxd file{IArray pArry; PArry=axmapcontrol1.readmxmaps (Shpfile, Type.Missing); IMap PMap; for(inti =0; i ) {PMap= Parry.get_element (i) asIMap; if(Pmap.name = ="Layers") {Axmapcontrol1.mousepointer=Esricontrolsmousepointer.esri