Function Description
Raster Splice refers to the merging of multiple raster or Image Data files into one piece of data quickly and in batches. At the same time, it supports the combination of Dataset and Local File to reduce the Data Import process and improve the efficiency of Data Processing.
Application scenario
Raster Data stitching has a wide range of practical application scenarios, such as UAV aerial photography, Remote Sensing Imagery and other image processing; it is especially suitable for data stitching with large amount of data, which can greatly improve the user's Data Processing efficiency.
Function entrance
Data tab-> Data Processing-> Stitching button.
Parameter Description
- Add File/Add Dataset: two types of Add Dataset and file are supported. Data can be added through the Add File and Add Dataset buttons in the toolbar. The data description is as follows:
- The coordinate system of the
- input data to be spliced shall be consistent; The Pixel Format of the
- input data to be spliced shall be consistent.
- If the input data to be spliced is Image Data, the number of bands shall be consistent.
- Create Dataset：
- Check Create Dataset to use the Raster Splice function to create a new target grid/Image Dataset according to the input Data Type to be spliced. The coordinate system, Pixel Format, band number and other information of the Target Dataset are the same as the data to be spliced; the Target Dataset Bounds is the union range of the input data to be spliced; Import the data to be spliced into the Target Dataset in the form of data appending, and finally obtain the spliced Result Dataset. If Create Dataset
- is not checked, the grid update function is used. Append the Raster Data from the list to the Target Dataset to update the contents of the Target Dataset.
- Encode Type: After selecting Create Dataset, you need to set the Encode Type of Result Dataset, including SGL, DCT, LZW, PNG, Compound and other Encode Types. The default is not to encode. Please refer to the Dataset Compression Encode Type for specific Encode Type description.
- Data Type: There are two types of Data Types that can be used for splicing: Grid and Image. The splicing function can only be performed between data of the same type. Therefore, the Data Type to be spliced needs to be determined before adding Data. The program defaults to Grid. When Dataset Type is selected, the system automatically filters based on the selected Raster Dataset Type.
- Target Datasource: Set the Datasource where the spliced Result Dataset is located.
- Target Dataset: Set the spliced Result Dataset.
Application example:
There are DEMRaster Data files of 34 provincial-level administrative regions in China. The coordinate system, Pixel Format and other information of the data files are the same. The results shown in the following figure are obtained by rapid splicing through the Raster Splice function:
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