Error in longitude contour near the ploe MATLAB
1
I want to plot lat/lon contours at the south pole, my data consists of grid cells, each with a lat and lon value. My problem is where the longitudes "meets" each other, as you can see in the picture, the vertical longitude in the lower part of the picture have a lot of lines on top of each other.
Does anyone know how to remove them? Here is my code:
coldiv = -57.5:2.5:-7.5;
min_pr = coldiv(1); max_pr = coldiv(end);
cmap = [0 0 0.4; 0 0 0.7; 0 0 1; 0 0.2 1; 0 0.4 1; 0 0.6 1; 0 0.8 1; 0 1 1;
0 1 0; 0.6 0.8 0; 0.6 0.6 0; 0.6 0.4 0; 0.6 0.2 0; 1 0 0];
x = linspace(1,length(coldiv)-2,length(cmap));
xi = 1:length(coldiv)-2;
cmap = interp1(x,cmap,xi);
cmap = [0. 0. 0.; cmap];
fig=figure();
set(fig, 'Position', [10 10 1500 700])
pcolor(mean(tas_ann_DMI_hist_tot,3))
shading flat
hold on;
contour(flip_lat_DMI, 'k','ShowText','on');
contour(flip_lon_DMI, 'k','ShowText','on');
caxis([min_pr max_pr]);colormap(cmap);
axesHandles = findobj(get(fig,'Children'), 'flat','Type','axes');
axis(axesHandles,'square')
set(gca,'YTick',);
set(gca,'XTick',);
matlab matlab-figure latitude-longitude
asked Nov 20 '18 at 12:58
Nicolaj Hansen
184
|
show 1 more comment
1
I want to plot lat/lon contours at the south pole, my data consists of grid cells, each with a lat and lon value. My problem is where the longitudes "meets" each other, as you can see in the picture, the vertical longitude in the lower part of the picture have a lot of lines on top of each other.
Does anyone know how to remove them? Here is my code:
coldiv = -57.5:2.5:-7.5;
min_pr = coldiv(1); max_pr = coldiv(end);
cmap = [0 0 0.4; 0 0 0.7; 0 0 1; 0 0.2 1; 0 0.4 1; 0 0.6 1; 0 0.8 1; 0 1 1;
0 1 0; 0.6 0.8 0; 0.6 0.6 0; 0.6 0.4 0; 0.6 0.2 0; 1 0 0];
x = linspace(1,length(coldiv)-2,length(cmap));
xi = 1:length(coldiv)-2;
cmap = interp1(x,cmap,xi);
cmap = [0. 0. 0.; cmap];
fig=figure();
set(fig, 'Position', [10 10 1500 700])
pcolor(mean(tas_ann_DMI_hist_tot,3))
shading flat
hold on;
contour(flip_lat_DMI, 'k','ShowText','on');
contour(flip_lon_DMI, 'k','ShowText','on');
caxis([min_pr max_pr]);colormap(cmap);
axesHandles = findobj(get(fig,'Children'), 'flat','Type','axes');
axis(axesHandles,'square')
set(gca,'YTick',);
set(gca,'XTick',);
matlab matlab-figure latitude-longitude
asked Nov 20 '18 at 12:58
Nicolaj Hansen
184
Could you show what your desired output is?
– Mad Physicist
Nov 20 '18 at 13:10
Ideally I want all the lines that are on top of each other removed. So there are line vertical lines between longitude -150 and 150
– Nicolaj Hansen
Nov 20 '18 at 13:17
2
What about manually drawing meridians withlineorplot? Drawing contour lines on longitudes is bound to fail where they suddenly drop from 180° to -180°. You may have to label meridians manually, though.
– Brice
Nov 20 '18 at 13:52
1
Can you put a Minimal, Complete, and Verifiable example? Give us some random data for the variables not defined in your code
– Ander Biguri
Nov 20 '18 at 14:43
1
Can't you use thepolaraxesfunction ?
– obchardon
Nov 20 '18 at 15:59
|
show 1 more comment
1
1
1
I want to plot lat/lon contours at the south pole, my data consists of grid cells, each with a lat and lon value. My problem is where the longitudes "meets" each other, as you can see in the picture, the vertical longitude in the lower part of the picture have a lot of lines on top of each other.
Does anyone know how to remove them? Here is my code:
coldiv = -57.5:2.5:-7.5;
min_pr = coldiv(1); max_pr = coldiv(end);
cmap = [0 0 0.4; 0 0 0.7; 0 0 1; 0 0.2 1; 0 0.4 1; 0 0.6 1; 0 0.8 1; 0 1 1;
0 1 0; 0.6 0.8 0; 0.6 0.6 0; 0.6 0.4 0; 0.6 0.2 0; 1 0 0];
x = linspace(1,length(coldiv)-2,length(cmap));
xi = 1:length(coldiv)-2;
cmap = interp1(x,cmap,xi);
cmap = [0. 0. 0.; cmap];
fig=figure();
set(fig, 'Position', [10 10 1500 700])
pcolor(mean(tas_ann_DMI_hist_tot,3))
shading flat
hold on;
contour(flip_lat_DMI, 'k','ShowText','on');
contour(flip_lon_DMI, 'k','ShowText','on');
caxis([min_pr max_pr]);colormap(cmap);
axesHandles = findobj(get(fig,'Children'), 'flat','Type','axes');
axis(axesHandles,'square')
set(gca,'YTick',);
set(gca,'XTick',);
matlab matlab-figure latitude-longitude
asked Nov 20 '18 at 12:58
Nicolaj Hansen
184
I want to plot lat/lon contours at the south pole, my data consists of grid cells, each with a lat and lon value. My problem is where the longitudes "meets" each other, as you can see in the picture, the vertical longitude in the lower part of the picture have a lot of lines on top of each other.
Does anyone know how to remove them? Here is my code:
coldiv = -57.5:2.5:-7.5;
min_pr = coldiv(1); max_pr = coldiv(end);
cmap = [0 0 0.4; 0 0 0.7; 0 0 1; 0 0.2 1; 0 0.4 1; 0 0.6 1; 0 0.8 1; 0 1 1;
0 1 0; 0.6 0.8 0; 0.6 0.6 0; 0.6 0.4 0; 0.6 0.2 0; 1 0 0];
x = linspace(1,length(coldiv)-2,length(cmap));
xi = 1:length(coldiv)-2;
cmap = interp1(x,cmap,xi);
cmap = [0. 0. 0.; cmap];
fig=figure();
set(fig, 'Position', [10 10 1500 700])
pcolor(mean(tas_ann_DMI_hist_tot,3))
shading flat
hold on;
contour(flip_lat_DMI, 'k','ShowText','on');
contour(flip_lon_DMI, 'k','ShowText','on');
caxis([min_pr max_pr]);colormap(cmap);
axesHandles = findobj(get(fig,'Children'), 'flat','Type','axes');
axis(axesHandles,'square')
set(gca,'YTick',);
set(gca,'XTick',);
matlab matlab-figure latitude-longitude
matlab matlab-figure latitude-longitude
asked Nov 20 '18 at 12:58
Nicolaj Hansen
184
asked Nov 20 '18 at 12:58
Nicolaj Hansen
184
edited Nov 20 '18 at 13:06
asked Nov 20 '18 at 12:58
Nicolaj Hansen
184
asked Nov 20 '18 at 12:58
Nicolaj Hansen
184
asked Nov 20 '18 at 12:58
Nicolaj Hansen
184
184
Could you show what your desired output is?
– Mad Physicist
Nov 20 '18 at 13:10
Ideally I want all the lines that are on top of each other removed. So there are line vertical lines between longitude -150 and 150
– Nicolaj Hansen
Nov 20 '18 at 13:17
2
What about manually drawing meridians withlineorplot? Drawing contour lines on longitudes is bound to fail where they suddenly drop from 180° to -180°. You may have to label meridians manually, though.
– Brice
Nov 20 '18 at 13:52
1
Can you put a Minimal, Complete, and Verifiable example? Give us some random data for the variables not defined in your code
– Ander Biguri
Nov 20 '18 at 14:43
1
Can't you use thepolaraxesfunction ?
– obchardon
Nov 20 '18 at 15:59
|
show 1 more comment
Could you show what your desired output is?
– Mad Physicist
Nov 20 '18 at 13:10
Ideally I want all the lines that are on top of each other removed. So there are line vertical lines between longitude -150 and 150
– Nicolaj Hansen
Nov 20 '18 at 13:17
2
What about manually drawing meridians withlineorplot? Drawing contour lines on longitudes is bound to fail where they suddenly drop from 180° to -180°. You may have to label meridians manually, though.
– Brice
Nov 20 '18 at 13:52
1
Can you put a Minimal, Complete, and Verifiable example? Give us some random data for the variables not defined in your code
– Ander Biguri
Nov 20 '18 at 14:43
1
Can't you use thepolaraxesfunction ?
– obchardon
Nov 20 '18 at 15:59
Could you show what your desired output is?
– Mad Physicist
Nov 20 '18 at 13:10
Could you show what your desired output is?
– Mad Physicist
Nov 20 '18 at 13:10
Ideally I want all the lines that are on top of each other removed. So there are line vertical lines between longitude -150 and 150
– Nicolaj Hansen
Nov 20 '18 at 13:17
Ideally I want all the lines that are on top of each other removed. So there are line vertical lines between longitude -150 and 150
– Nicolaj Hansen
Nov 20 '18 at 13:17
2
2
What about manually drawing meridians with
line or plot ? Drawing contour lines on longitudes is bound to fail where they suddenly drop from 180° to -180°. You may have to label meridians manually, though.– Brice
Nov 20 '18 at 13:52
What about manually drawing meridians with
line or plot ? Drawing contour lines on longitudes is bound to fail where they suddenly drop from 180° to -180°. You may have to label meridians manually, though.– Brice
Nov 20 '18 at 13:52
1
1
Can you put a Minimal, Complete, and Verifiable example? Give us some random data for the variables not defined in your code
– Ander Biguri
Nov 20 '18 at 14:43
Can you put a Minimal, Complete, and Verifiable example? Give us some random data for the variables not defined in your code
– Ander Biguri
Nov 20 '18 at 14:43
1
1
Can't you use the
polaraxes function ?– obchardon
Nov 20 '18 at 15:59
Can't you use the
polaraxes function ?– obchardon
Nov 20 '18 at 15:59
|
show 1 more comment
1 Answer
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oldest
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I found a solution.
flip_lon_DMI(flip_lon_DMI<-160) = NaN;
flip_lon_DMI(flip_lon_DMI>190) = NaN;
...
contour(flip_lat_DMI,-90:5:-60,'k--','ShowText','on','Color',[.5 .5 .5]);
contour(flip_lon_DMI,-150:30:180,'k--','ShowText','on','Color',[.5 .5 .5]);
answered Nov 21 '18 at 8:29
Nicolaj Hansen
184
add a comment |
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I found a solution.
flip_lon_DMI(flip_lon_DMI<-160) = NaN;
flip_lon_DMI(flip_lon_DMI>190) = NaN;
...
contour(flip_lat_DMI,-90:5:-60,'k--','ShowText','on','Color',[.5 .5 .5]);
contour(flip_lon_DMI,-150:30:180,'k--','ShowText','on','Color',[.5 .5 .5]);
answered Nov 21 '18 at 8:29
Nicolaj Hansen
184
add a comment |
0
I found a solution.
flip_lon_DMI(flip_lon_DMI<-160) = NaN;
flip_lon_DMI(flip_lon_DMI>190) = NaN;
...
contour(flip_lat_DMI,-90:5:-60,'k--','ShowText','on','Color',[.5 .5 .5]);
contour(flip_lon_DMI,-150:30:180,'k--','ShowText','on','Color',[.5 .5 .5]);
answered Nov 21 '18 at 8:29
Nicolaj Hansen
184
add a comment |
0
0
0
I found a solution.
flip_lon_DMI(flip_lon_DMI<-160) = NaN;
flip_lon_DMI(flip_lon_DMI>190) = NaN;
...
contour(flip_lat_DMI,-90:5:-60,'k--','ShowText','on','Color',[.5 .5 .5]);
contour(flip_lon_DMI,-150:30:180,'k--','ShowText','on','Color',[.5 .5 .5]);
answered Nov 21 '18 at 8:29
Nicolaj Hansen
184
I found a solution.
flip_lon_DMI(flip_lon_DMI<-160) = NaN;
flip_lon_DMI(flip_lon_DMI>190) = NaN;
...
contour(flip_lat_DMI,-90:5:-60,'k--','ShowText','on','Color',[.5 .5 .5]);
contour(flip_lon_DMI,-150:30:180,'k--','ShowText','on','Color',[.5 .5 .5]);
answered Nov 21 '18 at 8:29
Nicolaj Hansen
184
answered Nov 21 '18 at 8:29
Nicolaj Hansen
184
answered Nov 21 '18 at 8:29
Nicolaj Hansen
184
answered Nov 21 '18 at 8:29
Nicolaj Hansen
184
184
add a comment |
add a comment |
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Could you show what your desired output is?
– Mad Physicist
Nov 20 '18 at 13:10
Ideally I want all the lines that are on top of each other removed. So there are line vertical lines between longitude -150 and 150
– Nicolaj Hansen
Nov 20 '18 at 13:17
2
What about manually drawing meridians with
lineorplot? Drawing contour lines on longitudes is bound to fail where they suddenly drop from 180° to -180°. You may have to label meridians manually, though.– Brice
Nov 20 '18 at 13:52
1
Can you put a Minimal, Complete, and Verifiable example? Give us some random data for the variables not defined in your code
– Ander Biguri
Nov 20 '18 at 14:43
1
Can't you use the
polaraxesfunction ?– obchardon
Nov 20 '18 at 15:59