[R-sig-Geo] Open raster _ extract pixel value

[Komine]

Thanks to all for your answers, I progress!
Robert, after to try your code, all is ok. Now I try to open a NDVI image
with HRD extension. Also almost all is ok with the next code: 
library(raster) 
myobject <-raster("C:\\Users\\komine\\Desktop\\MODIS2\\NDVI_280") 
plot(myobject) 
click(myobject)   # and click somewhere on the map to get the value at that
location 
myobject[1]  # value of first cell 
myobject[10,10]  # value of cell at row 10, column 10 
extract(myobject, cbind(496439.36,1662612.38)) # value at coordinates
-	However, the image NDVI don’t appear well because I have a color on the
raster map like a mask,
-	Also, I compare to verify a pixel value NDVI extract from R and the ENVI
software (like Erdas) but I have two differences values for the same pixel
(for the past coordinates, pixel value from R= -0.5376111  whereas for ENVI= 
-0.586962)
Could you help on this problem? 
Thanks again 


--
View this message in context: http://r-sig-geo.2731867.n2.nabble.com/Open-raster-extract-pixel-value-tp6166730p6171051.html
Sent from the R-sig-geo mailing list archive at Nabble.com.