Mixing
How resolve gnuplot artifacts in heat map
I'm trying to generate a heat map from data (https://pastebin.com/AgivvGgX). The data are not in the "matrix" form.
I tried to use pm3d map and I obtained the following plot:
I also tried to use dgrid3d and view map:
set view map
set pal def
set dgrid3d 40,40,3
splot "plot.dat" using 1:2:3 u pm3d
And I obtained the following result:
Both the plots are not correct. The dgird3d keyword creates artifacts where there are not data points.
I obtained a nice plot using the code:
set view map
set pal def
splot "plot.dat" using 1:2:3 with points pointtype 5 pointsize 1 palette linewidth 8
Here the result
I would like to obtain a map similar to the latter one, but not with discrete points or squares but as a continuous heat map and have a white background where data are not present. Is it possible?
gnuplot heatmap
edited Jan 2 at 21:23
Michael O.
2,9142524
asked Jan 2 at 14:02
SimonSimon
112
add a comment |
I'm trying to generate a heat map from data (https://pastebin.com/AgivvGgX). The data are not in the "matrix" form.
I tried to use pm3d map and I obtained the following plot:
I also tried to use dgrid3d and view map:
set view map
set pal def
set dgrid3d 40,40,3
splot "plot.dat" using 1:2:3 u pm3d
And I obtained the following result:
Both the plots are not correct. The dgird3d keyword creates artifacts where there are not data points.
I obtained a nice plot using the code:
set view map
set pal def
splot "plot.dat" using 1:2:3 with points pointtype 5 pointsize 1 palette linewidth 8
Here the result
I would like to obtain a map similar to the latter one, but not with discrete points or squares but as a continuous heat map and have a white background where data are not present. Is it possible?
gnuplot heatmap
edited Jan 2 at 21:23
Michael O.
2,9142524
asked Jan 2 at 14:02
SimonSimon
112
add a comment |
I'm trying to generate a heat map from data (https://pastebin.com/AgivvGgX). The data are not in the "matrix" form.
I tried to use pm3d map and I obtained the following plot:
I also tried to use dgrid3d and view map:
set view map
set pal def
set dgrid3d 40,40,3
splot "plot.dat" using 1:2:3 u pm3d
And I obtained the following result:
Both the plots are not correct. The dgird3d keyword creates artifacts where there are not data points.
I obtained a nice plot using the code:
set view map
set pal def
splot "plot.dat" using 1:2:3 with points pointtype 5 pointsize 1 palette linewidth 8
Here the result
I would like to obtain a map similar to the latter one, but not with discrete points or squares but as a continuous heat map and have a white background where data are not present. Is it possible?
gnuplot heatmap
edited Jan 2 at 21:23
Michael O.
2,9142524
asked Jan 2 at 14:02
SimonSimon
112
I'm trying to generate a heat map from data (https://pastebin.com/AgivvGgX). The data are not in the "matrix" form.
I tried to use pm3d map and I obtained the following plot:
I also tried to use dgrid3d and view map:
set view map
set pal def
set dgrid3d 40,40,3
splot "plot.dat" using 1:2:3 u pm3d
And I obtained the following result:
Both the plots are not correct. The dgird3d keyword creates artifacts where there are not data points.
I obtained a nice plot using the code:
set view map
set pal def
splot "plot.dat" using 1:2:3 with points pointtype 5 pointsize 1 palette linewidth 8
Here the result
I would like to obtain a map similar to the latter one, but not with discrete points or squares but as a continuous heat map and have a white background where data are not present. Is it possible?
gnuplot heatmap
gnuplot heatmap
edited Jan 2 at 21:23
Michael O.
2,9142524
asked Jan 2 at 14:02
SimonSimon
112
edited Jan 2 at 21:23
Michael O.
2,9142524
asked Jan 2 at 14:02
SimonSimon
112
edited Jan 2 at 21:23
Michael O.
2,9142524
edited Jan 2 at 21:23
Michael O.
2,9142524
edited Jan 2 at 21:23
Michael O.
2,9142524
2,9142524
asked Jan 2 at 14:02
SimonSimon
112
asked Jan 2 at 14:02
SimonSimon
112
asked Jan 2 at 14:02
SimonSimon
112
112
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Since your data is irregular, you should use dgrid3d. It has various options (see help dgrid3d), here is a picture I've got while trying different kernels and options:
set view map
set palette defined (0 'white', 1 'blue', 2 'green', 3 'yellow', 4 'red')
set dgrid3d 100,100 exp kdensity 10,10
splot 'plot.dat' w pm3d palette
set dgrid3d 100,100 gauss kdensity 30,30
replot
answered Jan 2 at 21:13
Michael O.Michael O.
2,9142524
Interesting. The original data ranges from0 to 65but thecbrangeof the plots are now0 to 120and<50 to 400. How to "rescale" properly depending on thekdensityvalues? And how to distinguish between existing values=0and missing values? The latter now look like as they would be0.
– theozh
Jan 3 at 7:48
Thank you. I obtained different color code between values equal to zero and missing value using the option:set dgrid3d 100,100 hannorset dgrid3d 100,100 box
– Simon
Jan 3 at 21:30
@Simon Glad to know. Have you found the solution of scaling problem, as theozh mentioned?
– Michael O.
Jan 3 at 23:39
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Since your data is irregular, you should use dgrid3d. It has various options (see help dgrid3d), here is a picture I've got while trying different kernels and options:
set view map
set palette defined (0 'white', 1 'blue', 2 'green', 3 'yellow', 4 'red')
set dgrid3d 100,100 exp kdensity 10,10
splot 'plot.dat' w pm3d palette
set dgrid3d 100,100 gauss kdensity 30,30
replot
answered Jan 2 at 21:13
Michael O.Michael O.
2,9142524
Interesting. The original data ranges from0 to 65but thecbrangeof the plots are now0 to 120and<50 to 400. How to "rescale" properly depending on thekdensityvalues? And how to distinguish between existing values=0and missing values? The latter now look like as they would be0.
– theozh
Jan 3 at 7:48
Thank you. I obtained different color code between values equal to zero and missing value using the option:set dgrid3d 100,100 hannorset dgrid3d 100,100 box
– Simon
Jan 3 at 21:30
@Simon Glad to know. Have you found the solution of scaling problem, as theozh mentioned?
– Michael O.
Jan 3 at 23:39
add a comment |
Since your data is irregular, you should use dgrid3d. It has various options (see help dgrid3d), here is a picture I've got while trying different kernels and options:
set view map
set palette defined (0 'white', 1 'blue', 2 'green', 3 'yellow', 4 'red')
set dgrid3d 100,100 exp kdensity 10,10
splot 'plot.dat' w pm3d palette
set dgrid3d 100,100 gauss kdensity 30,30
replot
answered Jan 2 at 21:13
Michael O.Michael O.
2,9142524
Interesting. The original data ranges from0 to 65but thecbrangeof the plots are now0 to 120and<50 to 400. How to "rescale" properly depending on thekdensityvalues? And how to distinguish between existing values=0and missing values? The latter now look like as they would be0.
– theozh
Jan 3 at 7:48
Thank you. I obtained different color code between values equal to zero and missing value using the option:set dgrid3d 100,100 hannorset dgrid3d 100,100 box
– Simon
Jan 3 at 21:30
@Simon Glad to know. Have you found the solution of scaling problem, as theozh mentioned?
– Michael O.
Jan 3 at 23:39
add a comment |
Since your data is irregular, you should use dgrid3d. It has various options (see help dgrid3d), here is a picture I've got while trying different kernels and options:
set view map
set palette defined (0 'white', 1 'blue', 2 'green', 3 'yellow', 4 'red')
set dgrid3d 100,100 exp kdensity 10,10
splot 'plot.dat' w pm3d palette
set dgrid3d 100,100 gauss kdensity 30,30
replot
answered Jan 2 at 21:13
Michael O.Michael O.
2,9142524
Since your data is irregular, you should use dgrid3d. It has various options (see help dgrid3d), here is a picture I've got while trying different kernels and options:
set view map
set palette defined (0 'white', 1 'blue', 2 'green', 3 'yellow', 4 'red')
set dgrid3d 100,100 exp kdensity 10,10
splot 'plot.dat' w pm3d palette
set dgrid3d 100,100 gauss kdensity 30,30
replot
answered Jan 2 at 21:13
Michael O.Michael O.
2,9142524
edited Jan 2 at 21:49
answered Jan 2 at 21:13
Michael O.Michael O.
2,9142524
answered Jan 2 at 21:13
Michael O.Michael O.
2,9142524
answered Jan 2 at 21:13
Michael O.Michael O.
2,9142524
2,9142524
Interesting. The original data ranges from0 to 65but thecbrangeof the plots are now0 to 120and<50 to 400. How to "rescale" properly depending on thekdensityvalues? And how to distinguish between existing values=0and missing values? The latter now look like as they would be0.
– theozh
Jan 3 at 7:48
Thank you. I obtained different color code between values equal to zero and missing value using the option:set dgrid3d 100,100 hannorset dgrid3d 100,100 box
– Simon
Jan 3 at 21:30
@Simon Glad to know. Have you found the solution of scaling problem, as theozh mentioned?
– Michael O.
Jan 3 at 23:39
add a comment |
Interesting. The original data ranges from0 to 65but thecbrangeof the plots are now0 to 120and<50 to 400. How to "rescale" properly depending on thekdensityvalues? And how to distinguish between existing values=0and missing values? The latter now look like as they would be0.
– theozh
Jan 3 at 7:48
Thank you. I obtained different color code between values equal to zero and missing value using the option:set dgrid3d 100,100 hannorset dgrid3d 100,100 box
– Simon
Jan 3 at 21:30
@Simon Glad to know. Have you found the solution of scaling problem, as theozh mentioned?
– Michael O.
Jan 3 at 23:39
Interesting. The original data ranges from
0 to 65 but the cbrange of the plots are now 0 to 120 and <50 to 400. How to "rescale" properly depending on the kdensity values? And how to distinguish between existing values =0 and missing values? The latter now look like as they would be 0.– theozh
Jan 3 at 7:48
Interesting. The original data ranges from
0 to 65 but the cbrange of the plots are now 0 to 120 and <50 to 400. How to "rescale" properly depending on the kdensity values? And how to distinguish between existing values =0 and missing values? The latter now look like as they would be 0.– theozh
Jan 3 at 7:48
Thank you. I obtained different color code between values equal to zero and missing value using the option:
set dgrid3d 100,100 hann or set dgrid3d 100,100 box– Simon
Jan 3 at 21:30
Thank you. I obtained different color code between values equal to zero and missing value using the option:
set dgrid3d 100,100 hann or set dgrid3d 100,100 box– Simon
Jan 3 at 21:30
@Simon Glad to know. Have you found the solution of scaling problem, as theozh mentioned?
– Michael O.
Jan 3 at 23:39
@Simon Glad to know. Have you found the solution of scaling problem, as theozh mentioned?
– Michael O.
Jan 3 at 23:39
add a comment |
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