How to adjust x-axis in a plot?
显示 更早的评论
Hi,
I am trying to plot a global picture (as shown in figure attached) where my x-axis is from 180 to -180 longitudes but I need to adjust it to start from 0 longitudes and and end with just before 0 longitudes (a sample is also shown).
Please suggest how to achieve that?
Main Figure:
How I want:
采纳的回答
You can use circshift to rotate your data in a circular fashion. Once you have the circular shifted data, you can just manipulate the coastlon to get the longitudenal range starting from 0 to 360.
Here is an example using reanalysis data.
clc
clear
file='gdas.txt'; % this is really a netcdf data,
% %but I have changed just the file extension to attach this file here in the answers
lon=ncread(file,'lon');
lat=ncread(file,'lat');
tmp=ncread(file,'tmp');
load coastlines
figure
contourf(lon, lat, tmp', 'linecolor','none')
hold on
plot(coastlon, coastlat, 'k-','LineWidth',0.2)
caxis([200 320])
colormap(jet(12))
daspect(ones(1,3))
xlim([-180 180])
colorbar
coastlon=mod(coastlon,360);
coastlon(abs(diff(coastlon))>100)=nan; % commenting this line results into mutiple
% horizontal lines in the plot
figure
contourf(lon, lat, circshift(tmp,size(lon,1)/2,1)', 'linecolor','none')
hold on
plot(coastlon-180, coastlat, 'k-','LineWidth',0.2)
index=sum(lon==get(gca, 'XTick'),2);
xticklabels(lon(logical(index))+180)
caxis([200 320])
colormap(jet(12))
daspect(ones(1,3))
colorbar
更多回答（2 个）
KSSV
2021-8-20
1 个投票
To limit axes read about xlim, ylim, axis.
To put up your required lables on the axis read about xticklabel and yticklabel.
Steven Lord
2021-8-20
1 个投票
Since you're working with map data, you may want to explore the map axes that is part of Mapping Toolbox if this toolbox is available to you. There are a number of properties of map axes that you can control (including projection as well as longitude and latitude limits) that may be of use to you in creating this map graphic.
类别
在 帮助中心 和 File Exchange 中查找有关 Creating, Deleting, and Querying Graphics Objects 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
