% Figure size displayed on screen set(fh1, 'Units','centimeters', 'Position', [0 0 xSize ySize]) movegui(fh1, 'center') % Figure size printed on paper set(fh1,'PaperUnits', 'centimeters') set(fh1,'PaperSize', [X Y]) set(fh1,'PaperPosition', [xMargin yMargin xSize ySize]) set(fh1,'PaperOrientation', 'portrait')解释代码
时间: 2023-12-24 10:02:45 浏览: 28
这段代码是用来设置 MATLAB 中绘制的图形在屏幕和打印时的尺寸和位置的。具体解释如下:
- `set(fh1, 'Units','centimeters', 'Position', [0 0 xSize ySize])` 将图形句柄 `fh1` 的单位设置为厘米,并将其位置设置为 `[0 0 xSize ySize]`,其中 `xSize` 和 `ySize` 分别是图形的宽度和高度,单位是厘米。这样设置可以确保图形在屏幕上的显示尺寸与实际尺寸一致。
- `movegui(fh1, 'center')` 将图形窗口居中显示。
- `set(fh1,'PaperUnits', 'centimeters')` 将图形句柄 `fh1` 的打印单位设置为厘米。
- `set(fh1,'PaperSize', [X Y])` 设置打印纸张大小为 `[X Y]`,其中 `X` 和 `Y` 分别是纸张的宽度和高度,单位是厘米。
- `set(fh1,'PaperPosition', [xMargin yMargin xSize ySize])` 设置图形在打印纸张上的位置和大小,其中 `[xMargin yMargin]` 是图形距离纸张边缘的边距,`[xSize ySize]` 是图形的大小,单位都是厘米。
- `set(fh1,'PaperOrientation', 'portrait')` 设置打印方向为纵向。如果要设置为横向,可以将参数改为 `'landscape'`。
相关问题
优化这段代码 让它输出可以改变坐标轴大小的图像形式 % plot_Bscan.m % Script to plot EM fields from a gprMax B-scan % % Craig Warren clear all, clc [filename, pathname] = uigetfile('*.out', 'Select gprMax output file to plot B-scan', 'MultiSelect', 'on'); filename = fullfile(pathname, filename); % Open file and read fields if filename ~= 0 iterations = double(h5readatt(filename, '/', 'Iterations')); dt = h5readatt(filename, '/', 'dt'); prompt = 'Which field do you want to view? Ex, Ey, or Ez: '; field = input(prompt,'s'); fieldpath = strcat('/rxs/rx1/', field); field = h5read(filename, fieldpath)'; time = linspace(0, (iterations - 1) * dt, iterations)'; traces = 0:size(field, 2); fh1=figure('Name', filename); clims = [-max(max(abs(field))) max(max(abs(field)))]; im = imagesc(traces, time, field, clims); xlabel('Trace number'); ylabel('Time [s]'); c = colorbar; c.Label.String = 'Field强度 strength [V/m]'; ax = gca; ax.FontSize = 16; xlim([0 traces(end)]); % Options to create a nice looking figure for display and printing set(fh1,'Color','white','Menubar','none'); X = 60; % Paper size Y = 30; % Paper size xMargin = 0; % Left/right margins from page borders yMargin = 0; % Bottom/top margins from page borders xSize = X - 2*xMargin; % Figure size on paper (width & height) ySize = Y - 2*yMargin; % Figure size on paper (width & height) % Figure size displayed on screen set(fh1, 'Units','centimeters', 'Position', [0 0 xSize ySize]) movegui(fh1, 'center') % Figure size printed on paper set(fh1,'PaperUnits', 'centimeters') set(fh1,'PaperSize', [X Y]) set(fh1,'PaperPosition', [xMargin yMargin xSize ySize]) set(fh1,'PaperOrientation', 'portrait') end
改进后的代码如下:
```matlab
% plot_Bscan.m
% Script to plot EM fields from a gprMax B-scan
% Craig Warren
clear all, clc
[filename, pathname] = uigetfile('*.out', 'Select gprMax output file to plot B-scan', 'MultiSelect', 'on');
filename = fullfile(pathname, filename);
% Open file and read fields
if filename ~= 0
iterations = double(h5readatt(filename, '/', 'Iterations'));
dt = h5readatt(filename, '/', 'dt');
prompt = 'Which field do you want to view? Ex, Ey, or Ez: ';
field = input(prompt,'s');
fieldpath = strcat('/rxs/rx1/', field);
field = h5read(filename, fieldpath)';
time = linspace(0, (iterations - 1) * dt, iterations)';
traces = 0:size(field, 2);
fh1=figure('Name', filename);
clims = [-max(max(abs(field))) max(max(abs(field)))];
im = imagesc(traces, time, field, clims);
xlabel('Trace number');
ylabel('Time [s]');
c = colorbar;
c.Label.String = 'Field strength [V/m]';
ax = gca;
ax.FontSize = 16;
% Options to create a nice looking figure for display and printing
set(fh1,'Color','white','Menubar','none');
X = 60; % Paper size
Y = 30; % Paper size
xMargin = 0; % Left/right margins from page borders
yMargin = 0; % Bottom/top margins from page borders
xSize = X - 2*xMargin; % Figure size on paper (width & height)
ySize = Y - 2*yMargin; % Figure size on paper (width & height)
% Figure size displayed on screen
set(fh1, 'Units','centimeters', 'Position', [0 0 xSize ySize])
movegui(fh1, 'center')
% Figure size printed on paper
set(fh1,'PaperUnits', 'centimeters')
set(fh1,'PaperSize', [X Y])
set(fh1,'PaperPosition', [xMargin yMargin xSize ySize])
set(fh1,'PaperOrientation', 'portrait')
% Allow user to adjust axis limits
prompt = 'Do you want to adjust the axis limits? (y/n): ';
response = input(prompt, 's');
if response == 'y'
prompt = 'Enter the lower limit for the y-axis: ';
yLow = input(prompt);
prompt = 'Enter the upper limit for the y-axis: ';
yHigh = input(prompt);
ylim([yLow, yHigh]);
end
end
```
改进的部分是添加了一个可以让用户调整坐标轴大小的选项。当程序运行时,它会询问用户是否要调整y轴的范围,如果用户输入'y',则程序会提示用户输入y轴下限和上限。然后使用ylim函数将y轴的范围设置为用户输入的值。
UnicodeDecodeError: 'gbk' codec can't decode byte 0xbf in position 2: illegal multibyte sequence
This error occurs when Python is trying to decode a string using the 'gbk' codec, but encounters a byte that is not a valid character in the encoding. In this case, the byte 0xbf is causing the error.
To fix this issue, you can try the following:
1. Check the encoding of the file or data you are trying to decode. Make sure it is correct and matches the encoding you are using.
2. If the encoding is correct, then the byte sequence may be corrupted. Try opening the file or data in a different program or editor to see if the byte sequence is displayed correctly.
3. If the byte sequence is still not displaying correctly, then it may be necessary to clean the data by removing any invalid characters or replacing them with valid ones.
4. If none of these solutions work, then you may need to use a different encoding or codec to decode the data.
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