gdalwarp 命令

常用示例

说明

gdalwarp is an image mosaicing, reprojection, and warping utility from the GDAL library. It transforms raster datasets between coordinate reference systems, resamples to different resolutions, mosaics multiple inputs into a single output, and clips rasters using vector boundaries. The utility supports all GDAL raster formats and can apply ground control points (GCPs) stored with images. Various resampling algorithms are available, from fast nearest-neighbor to high-quality Lanczos windowed sinc interpolation. gdalwarp is essential for GIS workflows requiring coordinate system transformations, data integration from multiple sources, or preparing raster data for specific analysis requirements.

参数

-s_srs _SRS_

Source spatial reference system (EPSG code, PROJ.4, or WKT).

-t_srs _SRS_

Target spatial reference system for output.

-r _METHOD_

Resampling method: near, bilinear, cubic, cubicspline, lanczos, average, mode, max, min, med, q1, q3, sum.

-tr _XRES_ _YRES_

Target resolution in georeferenced units.

-ts _WIDTH_ _HEIGHT_

Target size in pixels.

-te _XMIN_ _YMIN_ _XMAX_ _YMAX_

Target extent in georeferenced coordinates.

-of _FORMAT_

Output format (GTiff, PNG, JPEG, etc.).

-ot _TYPE_

Output band data type (Byte, UInt16, Float32, etc.).

-cutline _FILE_

Vector file for clipping (shapefile, GeoJSON, etc.).

-crop_to_cutline

Crop output extent to cutline boundary.

-overwrite

Overwrite existing output file.

-multi

Use multithreaded warping.

-co _NAME_=_VALUE_

Creation option for output format.