【MATLAB】调整legend的大小位置

源地址:
数组

http://hi.baidu.com/csudeng/item/12437d10424e6f24f6625cc9ide


MATLAB中plot命令绘图微调的几个注记字体

一、MATLAB如何从硬盘读取文件。对象

二、如何微调subplot子图的位置。ci

三、plot命令绘曲线时,曲线上的标志如何调整大小。get

四、坐标轴的调整。it

六、坐标标题中如何标上标。io

七、如何调整图示(legend)的位置。ast


%----------------------------------class

% 这里要画一个2*2共4幅子图。先将第1个子图的位置调整。

h = subplot( 2, 2, 1); % 先让MATLAB默 认绘制第1幅子图,h是子图1的句柄

po = get( h, 'Position' );   %       get命令从句柄h中获取'Position'的内容,返回一个含4个元素的一维数组放到po中。这4个元 素分别是子图1的left, bottom, width, height。

subplot( 'Position', [po(1)+0.03, po(2)-0.03, po(3), po(4)]);  子图1的新位置能够这样调整

%----------------------------------


hold on;

axis([0 13 -3 2]);

set( gca, 'XTick', [1:12] );    gca表示当前对象句柄,set命令分别对当前对象(即子图1)设置坐标轴XTick和YTick属性。这 两个属性分别表示了坐标轴的实际绘值范围。

set( gca, 'YTick', [-3:1:2] );

title( 'The North Hemisphere' );

plot( 1:12, bc, '-r.', 'MarkerSize', 10 );   子图1中第1条曲线用实线绘,带有圆点,红色。MarkerSize属性设 置圆点的大小是10。这样画出来的就是实心圆了。

plot( 1:12, nit, '-b.', 'MarkerSize', 10 );

plot( 1:12, sul, '-g.', 'MarkerSize', 10 );

plot( 1:12, poa, '-m.', 'MarkerSize', 10 );

plot( 1:12, soa, '-k.', 'MarkerSize', 10 );

%zeroArr = zeros( 14 );

%plot( 0:13, zeroArr, '--k' )

xlabel( 'Month' );

ylabel( 'Radiative Effect (Wm^-^2)' );  单位里有上标,^表示后续一个字符为上标。


下述代码绘子图二、三、4,雷同。

%--------------------------------------------------------------------------

% NH Radiative Forcing Fut-Mod  子图2

fid_bc=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_NH\bc.dat','r');

bc = fscanf( fid_bc, '%f', [1,12]);

fclose( fid_bc );

fid_nit=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_NH\nit.dat','r');

nit = fscanf( fid_nit, '%f', [1,12]);

fclose( fid_nit );

fid_sul=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_NH\sul.dat','r');

sul = fscanf( fid_sul, '%f', [1,12]);

fclose( fid_sul );

fid_poa=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_NH\poa.dat','r');

poa = fscanf( fid_poa, '%f', [1,12]);

fclose( fid_poa );

fid_soa=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_NH\soa.dat','r');

soa = fscanf( fid_soa, '%f', [1,12]);

fclose( fid_soa );


%----------------------------------

h = subplot( 2, 2, 3, 'replace' );

po = get( h, 'Position' );

subplot( 2, 2, 3, 'replace' );

subplot( 'Position', [po(1)+0.03, po(2)+0.03, po(3), po(4)]);

%----------------------------------

box on;

hold on;

axis([0 13 -3 2]);

set( gca, 'XTick', [1:12] );

set( gca, 'YTick', [-3:1:2] );

%title( 'NH Fut-Mod' );

plot( 1:12, bc, '-r.', 'MarkerSize', 10 );

plot( 1:12, nit, '-b.', 'MarkerSize', 10 );

plot( 1:12, sul, '-g.', 'MarkerSize', 10 );

plot( 1:12, poa, '-m.', 'MarkerSize', 10 );

plot( 1:12, soa, '-k.', 'MarkerSize', 10 );

%zeroArr = zeros( 14 );

%plot( 0:13, zeroArr, '--k' )

xlabel( 'Month' );

ylabel( 'Radiative Forcing (Wm^-^2)' );


%--------------------------------------------------------------------------

% SH Radiative Effect Mod-Noall  子图3

fid_bc=fopen('D:\_CurrentPaper\RadiativeForcing\ModNoall_SH\bc.dat','r');

bc = fscanf( fid_bc, '%f', [1,12]);

fclose( fid_bc );

fid_nit=fopen('D:\_CurrentPaper\RadiativeForcing\ModNoall_SH\nit.dat','r');

nit = fscanf( fid_nit, '%f', [1,12]);

fclose( fid_nit );

fid_sul=fopen('D:\_CurrentPaper\RadiativeForcing\ModNoall_SH\sul.dat','r');

sul = fscanf( fid_sul, '%f', [1,12]);

fclose( fid_sul );

fid_poa=fopen('D:\_CurrentPaper\RadiativeForcing\ModNoall_SH\poa.dat','r');

poa = fscanf( fid_poa, '%f', [1,12]);

fclose( fid_poa );

fid_soa=fopen('D:\_CurrentPaper\RadiativeForcing\ModNoall_SH\soa.dat','r');

soa = fscanf( fid_soa, '%f', [1,12]);

fclose( fid_soa );

%----------------------------------

h = subplot( 2, 2, 2, 'replace' );

po = get( h, 'Position' );

subplot( 2, 2, 2, 'replace' );

subplot( 'Position', [po(1)-0.03, po(2)-0.03, po(3), po(4)]);

%----------------------------------

box on;

hold on;

axis([0 13 -1.2 0.8]);

set( gca, 'XTick', [1:12] );

set( gca, 'YTick', [-1.2:0.4:0.8] );

title( 'The South Hemisphere' );

plot( 1:12, bc, '-r.', 'MarkerSize', 10 );

plot( 1:12, nit, '-b.', 'MarkerSize', 10 );

plot( 1:12, sul, '-g.', 'MarkerSize', 10 );

plot( 1:12, poa, '-m.', 'MarkerSize', 10 );

plot( 1:12, soa, '-k.', 'MarkerSize', 10 );

%zeroArr = zeros( 14 );

%plot( 0:13, zeroArr, '--k' )

xlabel( 'Month' );

%ylabel( 'Radiative Effect (Wm^-^2)' );


%--------------------------------------------------------------------------

% SH Radiative Forcing Fut-Mod  子图4

fid_bc=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_SH\bc.dat','r');

bc = fscanf( fid_bc, '%f', [1,12]);

fclose( fid_bc );

fid_nit=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_SH\nit.dat','r');

nit = fscanf( fid_nit, '%f', [1,12]);

fclose( fid_nit );

fid_sul=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_SH\sul.dat','r');

sul = fscanf( fid_sul, '%f', [1,12]);

fclose( fid_sul );

fid_poa=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_SH\poa.dat','r');

poa = fscanf( fid_poa, '%f', [1,12]);

fclose( fid_poa );

fid_soa=fopen('D:\_CurrentPaper\RadiativeForcing\FutMod_SH\soa.dat','r');

soa = fscanf( fid_soa, '%f', [1,12]);

fclose( fid_soa );

%----------------------------------

h = subplot( 2, 2, 4, 'replace' );

po = get( h, 'Position' );

subplot( 2, 2, 4, 'replace' );

subplot( 'Position', [po(1)-0.03, po(2)+0.03, po(3), po(4)]);

%----------------------------------

box on;

hold on;

axis([0 13 -1.2 0.8]);

set( gca, 'XTick', [1:12] );

set( gca, 'YTick', [-1.2:0.4:0.8] );

%title( 'SH Fut-Mod' );

plot( 1:12, bc, '-r.', 'MarkerSize', 10 );

plot( 1:12, nit, '-b.', 'MarkerSize', 10 );

plot( 1:12, sul, '-g.', 'MarkerSize', 10 );

plot( 1:12, poa, '-m.', 'MarkerSize', 10 );

plot( 1:12, soa, '-k.', 'MarkerSize', 10 );

%zeroArr = zeros( 14 );

%plot( 0:13, zeroArr, '--k' )

xlabel( 'Month' );

%ylabel( 'Radiative Forcing (Wm^-^2)' );


我将legend放在了子图4上。

gca=legend( 'BC', 'Nitrate', 'Sulfate', 'POA', 'SOA', 4 );  4表示把legend放在子图的右下角,还有几个数字的含义是:

       0 = Automatic "best" placement (least conflict with data)

      1 = Upper right-hand corner (default)

      2 = Upper left-hand corner

      3 = Lower left-hand corner

      4 = Lower right-hand corner

     -1 = To the right of the plot


po=get( gca, 'Position' ); 发现这样放置后legend要挡住图,所以须要再微调一下。得到legend的'Position'值。

set( gca, 'FontSize', 8, 'Position', [po(1)-0.01, po(2)+0.01, po(3), po(4)] ); 从新设置legend的位置,同时设置legend里面的字体为8号。

legend('boxoff');  不画legend的外框。


强调的是上述调整legend的值要不断地试。由于legend相对子图的位置还要随画图窗口大小变 化而变化。若是你看不懂这句,试试就知道了。


我通常是将MATLAB画出的图打印成PDF,再用Acrobat打开截屏,贴到WORD中,这样图 像质量彷佛比较好。谁还有更好的将MATLAB图转贴到WORD的方法,欢迎赐教。

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