library(raster)
library(rgdal)
RGBimage <- stack("E:/Amit Haldar/Work/1.0 Projects/RGB/D035_Georef.tif")
stackImage <- stack(RGBimage[[1]], RGBimage[[2]], RGBimage[[3]])
plotRGB(stackImage)
Fiber <- readOGR("E:/Amit Haldar/Work/1.0 Projects/Shp/Landuse2018.shp")
data <- Fiber
data$vb<- paste(data$SECTOR, data$ESTATE, data$COMPNO, sep="")
shp <- subset(data, vb=="D035")
crs(shp) <- "+proj=utm +zone=47 +datum=WGS84 +units=m +no_defs +ellps=WGS84 +towgs84=0,0,0"
shp_simp <- gSimplify(shp, tol = 3, topologyPreserve = TRUE)
plot(shp_simp)
print(shp_simp)
class : SpatialPolygons
features : 1
extent : 759548.4, 760468.4, -13233.4, -12185.39 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=utm +zone=47 +datum=WGS84 +units=m +no_defs +ellps=WGS84 +towgs84=0,0,0
print(stackImage)
class : RasterStack
dimensions : 21660, 20544, 444983040, 3 (nrow, ncol, ncell, nlayers)
resolution : 0.0562666, 0.0562666 (x, y)
extent : 759433.3, 760589.2, 9986667, 9987886 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=utm +zone=47 +south +datum=WGS84 +units=m +no_defs +ellps=WGS84 +towgs84=0,0,0
names : TEW_D035_Georef.1, TEW_D035_Georef.2, TEW_D035_Georef.3
min values : 0, 0, 0
max values : 255, 255, 255
我正在尝试使用形状文件裁剪图像。形状文件范围不一定与图像相同。多边形覆盖了图像的一部分。我尝试了几种方法
proj4string(stackImage) <- proj4string(shp_simp)
然后
cropImage <- crop(stackImage, extent(shp_simp), snap="out")
Error in .local(x, y, ...) : extents do not overlap
compExtent <- spTransform(shp_simp, CRS(proj4string(stackImage)))
cropImage <- crop(stackImage, extent(compExtent), snap="out")
仍然是相同的错误
Error in .local(x, y, ...) : extents do not overlap
我要去哪里错了?感谢您的提前支持。