#
# Explore the effect of image data pixels that are
# missing/NaN/Inf/garbage/...
# Test 2D and 3D versions of the generic and
# terminal-optimized image code.
# The four tests should all come out the same.
#
set title "Treatment of missing/undefined/NaN/Inf data"
unset key
set tic scale 0
set border 3 front
set cbrange [-2:7]
set cblabel "Score"
set cbtics 0,1,5
set xrange [-0.5:4.5]
set yrange [-0.5:5.5]
set datafile missing "?"
set ytics ("-Inf" 5, "Inf" 4, "NaN" 3, "Junk" 2, "?" 1, "0" 0)
unset xtics
# Define the test data as a named data block
$matrixdata << EOD
0 5 4 3 0
? 2 2 0 1
Junk 1 2 3 5
NaN 0 0 3 0
Inf 3 2 0 3
-Inf 0 1 2 3
EOD
set xlabel "First column contains various odd values"
set view map
plot $matrixdata matrix with image
|
# # set title "Same thing in 'pixels' mode (2D)" plot $matrixdata matrix with image pixels |
set title "Same thing passing data value through 'using 1:2:($3)'" plot $matrixdata matrix using 1:2:($3) with image pixels |
set title "Same thing in 3D mode" splot $matrixdata matrix with image |
set title "Same thing in 'pixels' mode (3D)" splot $matrixdata matrix with image pixels |
set title "3D image with pixel value in 4th column" splot $matrixdata matrix using 1:2:(0):3 with image |
reset $DATA << EOD 0 0 0 0 1 -1 0 2 -4 0 3 -9 1 0 1 1 1 0 1 2 -3 1 3 -8 2 0 4 2 1 3 2 2 0 2 3 -5 3 0 9 3 1 8 3 2 NaN 3 3 9 EOD unset xtics unset ytics unset key set title "image from non-matrix data" set label 1 at 3,2 "NaN\nshould appear as\nbackground" front center plot $DATA with image |
set title "negative values mapped to log-scale colorbar"
set label 2 at 0,2.5 "Negative values become NaN\nwith a log-scale color mapping"
set cbrange [0.1:10]
set log cb
plot $DATA with image, $DATA using 1:2:(sprintf("%g",$3)) with labels tc rgb "green"
|
reset |