function result_status = ndvi_map(JSONString)
pkg load image
ndviImg = imread('ndvi.tif');
ndviImg = single(ndviImg);
ndviImg = ndviImg/(2^16);
maxNDVI = max(max(ndviImg))
minNDVI = min(min(ndviImg))
imgCMP = gen_map1_img(ndviImg);
imwrite(uint8(imgCMP),'ndvi_full.png');
return