Hi,
I just find that the forum post editor is pretty limited in formatting, for example, no coloring or font can be specified.
Has it always been like this? Is there any plan for improvement?
Bob
MATLAB: No rich formatting for posts
fomatting post
Related Solutions
m表示实际值和预测值的拟合系数，越靠近1，表明二者越接近。
b表示实际值和预测值的拟合截距，越靠近0 ，表明效果越好。
r表示实际值和预测值的相关系数。
Try this:
clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
workspace; % Make sure the workspace panel is showing.
format long g;format compact;fontSize = 20;%===============================================================================
% Have user browse for a file, from a specified "starting folder."
% For convenience in browsing, set a starting folder from which to browse.
startingFolder = pwdif ~exist(startingFolder, 'dir') % If that folder doesn't exist, just start in the current folder.
startingFolder = pwd;end% Get the name of the file that the user wants to use.
defaultFileName = fullfile(startingFolder, '*.jpg');[baseFileName, folder] = uigetfile(defaultFileName, 'Select a file');if baseFileName == 0 % User clicked the Cancel button.
return;end% Get the full filename, with path prepended.
fullFileName = fullfile(folder, baseFileName);% Check if file exists.
if ~exist(fullFileName, 'file') % The file doesn't exist -- didn't find it there in that folder.
% Check the entire search path (other folders) for the file by stripping off the folder.
fullFileNameOnSearchPath = baseFileName; % No path this time.
if ~exist(fullFileNameOnSearchPath, 'file') % Still didn't find it. Alert user.
errorMessage = sprintf('Error: %s does not exist in the search path folders.', fullFileName); uiwait(warndlg(errorMessage)); return; endendgrayImage = imread(fullFileName);% Get the dimensions of the image.
% numberOfColorChannels should be = 1 for a gray scale image, and 3 for an RGB color image.
[rows, columns, numberOfColorChannels] = size(grayImage);if numberOfColorChannels > 1 % It's not really gray scale like we expected - it's color.
% Use weighted sum of ALL channels to create a gray scale image.
grayImage = rgb2gray(grayImage); % ALTERNATE METHOD: Convert it to gray scale by taking only the green channel,
% which in a typical snapshot will be the least noisy channel.
% grayImage = grayImage(:, :, 2); % Take green channel.
end% Display the image.
subplot(1, 2, 1);imshow(grayImage, []);title('Original Grayscale Image', 'FontSize', fontSize, 'Interpreter', 'None');%------------------------------------------------------------------------------
% Set up figure properties:
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0, 0.04, 1, 0.96]);drawnow;% Threshold the image.
binaryImage = grayImage > 50; % Hgh enough to get rid of bad JPEG artifacts. Never use JPEG for image analysis!
% Get rid of blobs rouching the border, like that white frame.
binaryImage = imclearborder(binaryImage);% Take largest remaining blob.
binaryImage = bwareafilt(binaryImage, 1);% Display the image.subplot(1, 2, 2);imshow(binaryImage, []);title('Binary Image with line down it', 'FontSize', fontSize, 'Interpreter', 'None');% Go down image finding first and last points
hold on;minRequiredDistance = 10; % Whatever....
x = NaN(rows, 1);y = NaN(rows, 1);for row = 1: rows col1 = find(binaryImage(row,:), 1, 'first'); col2 = find(binaryImage(row,:), 1, 'last'); if col2-col1 > minRequiredDistance x(row) = (col1 + col2) / 2; y(row) = row; endendplot(x, y, 'r-', 'MarkerSize', 8, 'LineWidth', 2);helpdlg('Done!');
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