红色
“#!位置=” - 1673.27 656.387" #TOP_LEFT =! “ - 1673.27 656.387” #BOTTOM_RIGHT =! “ - 1674.27 657.387”!#BOUNDING_RECT = “ - 1673.27 656.387 -1 -1”!#ORDER = “5E + 14” #! FOLLOW_ANCHOR="true" #! INFO_NODE="false" #! COLOUR="1,1,0.784314,0.192157" #! SIZE_POLICY="8" #! COMMENT_TYPE="REGULAR" #! ANCHORED_NODE="4" #! /> #!Nir
" # !POSITION="-1670.14 354.755" #! TOP_LEFT="-1670.14 354.755" #! BOTTOM_RIGHT="-1671.14 355.755" #! BOUNDING_RECT="-1670.14 354.755 -1 -1" #! ORDER="5e+14" #! FOLLOW_ANCHOR="true" #! INFO_NODE="false" #! COLOUR="1,1,0.784314,0.192157" #! SIZE_POLICY="8" #! COMMENT_TYPE="REGULAR" #! ANCHORED_NODE="5" #! /> #!NDVI (normalized difference vegetation index) is based on the ability of the plants to consume visible light radiation for photosynthesis (mostly in blue and red parts of the spectrum, this is why we see our plants mostly green, this color is mostly reflected).Near-infrared light, on the other hand, cannot cause the proper reaction in cells, and hence, is being reflected (otherwise it will overheat the plants).The more infrared light is reflected and the more red light is consumed, the healthier the plant is.
" # !POSITION="-1688.04 1450.27" #! TOP_LEFT="-1688.04 1450.27" #! BOTTOM_RIGHT="193.752 820.262" #! BOUNDING_RECT="-1688.04 1450.27 1881.79 630.006" #! ORDER="5e+14" #! FOLLOW_ANCHOR="true" #! INFO_NODE="false" #! COLOUR="1,1,0.784314,0.196078" #! SIZE_POLICY="10" #! COMMENT_TYPE="REGULAR" #! ANCHORED_NODE="0" #! /> #!Calculate NDVI
NDVI changes from -1 to 1, where the bigger the number the healthier vegetation
(negative numbers usually mean no vegetation at all)
" # !POSITION="-1553.14 -174.377" #! TOP_LEFT="-1553.14 -174.377" #! BOTTOM_RIGHT="-1554.14 -173.377" #! BOUNDING_RECT="-1553.14 -174.377 -1 -1" #! ORDER="5e+14" #! FOLLOW_ANCHOR="true" #! INFO_NODE="false" #! COLOUR="1,1,0.784314,0.196078" #! SIZE_POLICY="8" #! COMMENT_TYPE="REGULAR" #! ANCHORED_NODE="6" #! /> #!Go from continuous range to 4 discrete values
" # !POSITION="-612.506 688.132" #! TOP_LEFT="-612.506 688.132" #! BOTTOM_RIGHT="-613.506 689.132" #! BOUNDING_RECT="-612.506 688.132 -1 -1" #! ORDER="5e+14" #! FOLLOW_ANCHOR="true" #! INFO_NODE="false" #! COLOUR="1,1,0.784314,0.196078" #! SIZE_POLICY="8" #! COMMENT_TYPE="REGULAR" #! ANCHORED_NODE="16" #! /> #!Create a palette for four values made in previous transformer
" # !POSITION="-340.629 41.2495" #! TOP_LEFT="-340.629 41.2495" #! BOTTOM_RIGHT="-341.629 42.2495" #! BOUNDING_RECT="-340.629 41.2495 -1 -1" #! ORDER="5e+14" #! FOLLOW_ANCHOR="true" #! INFO_NODE="false" #! COLOUR="1,1,0.784314,0.196078" #! SIZE_POLICY="8" #! COMMENT_TYPE="REGULAR" #! ANCHORED_NODE="15" #! /> #!Add palette
" # !POSITION="821.883 675.631" #! TOP_LEFT="821.883 675.631" #! BOTTOM_RIGHT="820.883 676.631" #! BOUNDING_RECT="821.883 675.631 -1 -1" #! ORDER="5e+14" #! FOLLOW_ANCHOR="true" #! INFO_NODE="false" #! COLOUR="1,1,0.784314,0.196078" #! SIZE_POLICY="8" #! COMMENT_TYPE="REGULAR" #! ANCHORED_NODE="11" #! /> #!Save as NDVI Geotiff file
" # !POSITION="1351.86 823.51" #! TOP_LEFT="1351.86 823.51" #! BOTTOM_RIGHT="1350.86 824.51" #! BOUNDING_RECT="1351.86 823.51 -1 -1" #! ORDER="5e+14" #! FOLLOW_ANCHOR="true" #! INFO_NODE="false" #! COLOUR="1,1,0.784314,0.196078" #! SIZE_POLICY="8" #! COMMENT_TYPE="REGULAR" #! ANCHORED_NODE="17" #! /> #!