开源软件在地图数据处理中的应用

GDALDataset* pDataSet = (GDALDataset*)GDALOpen("/Users/didi/Desktop/test.img",GA_ReadOnly);//仿射变换6参数double geoTransfORM[6] = {0};pDataSet->GetGeoTransform(geoTransform);//影像宽int nWidth = pDataSet->GetRasterXSize();//影像高int nHeight = pDataSet->GetRasterYSize();//像素值矩阵unsigned char* pPixelValue = (unsigned char *)malloc(sizeof(unsigned char) * nWidth * nHeight);memset(pPixelValue,0,nWidth * nHeight);CPLErr err = pDataSet->RasterIO(GF_Read,0,0,nWidth,nHeight,pPixelValue,nWidth,nHeight,GDT_Byte,1,NULL,0,0,0);free(pPixelValue);GDALClose(pDataSet);