a=xlsread(‘output1.xlsx’,’final graph’);
xaxis=0:9;
yaxis=a(:,2);
yaxis1=a(:,3);
yaxis=a(:,4);
yaxis2=a(:,5);

figure
plot(xaxis,yaxis)
hold on
plot(xaxis,yaxis1)
hold on
plot(xaxis,yaxis2)
how to change xlim to specific to 0 :3:9 ylim to 30:30:300 how to insert data tips or markers at each point of xaxisa=xlsread(‘output1.xlsx’,’final graph’);
xaxis=0:9;
yaxis=a(:,2);
yaxis1=a(:,3);
yaxis=a(:,4);
yaxis2=a(:,5);

figure
plot(xaxis,yaxis)
hold on
plot(xaxis,yaxis1)
hold on
plot(xaxis,yaxis2)
how to change xlim to specific to 0 :3:9 ylim to 30:30:300 how to insert data tips or markers at each point of xaxis a=xlsread(‘output1.xlsx’,’final graph’);
xaxis=0:9;
yaxis=a(:,2);
yaxis1=a(:,3);
yaxis=a(:,4);
yaxis2=a(:,5);

figure
plot(xaxis,yaxis)
hold on
plot(xaxis,yaxis1)
hold on
plot(xaxis,yaxis2)
how to change xlim to specific to 0 :3:9 ylim to 30:30:300 how to insert data tips or markers at each point of xaxis tick marks MATLAB Answers — New Questions

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I have a picture of the code and part of what its doing when I run it but it is creating hundreds of figures of the two plots I’m trying to create. Clearly I’m missing somethingI have a picture of the code and part of what its doing when I run it but it is creating hundreds of figures of the two plots I’m trying to create. Clearly I’m missing something I have a picture of the code and part of what its doing when I run it but it is creating hundreds of figures of the two plots I’m trying to create. Clearly I’m missing something matlab MATLAB Answers — New Questions

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I am writing parfor loops and using folders as "lock files" for thread safety because mkdir is atomic and I believe is therefore the best option in MATLAB for a "lock file". However, I am getting the following error:
Error using makeLockFile
The system cannot find the path specified.
This error occurs on the line in makeLockFile containing
mkdir(pidPath);
Here is my code for makeLockFile (top), releaseLockFile (middle), and the helper function getMATLABPids (bottom):
What I am trying to do is:
Create a "lock folder". This folder has the same path as a .mat file (except the extension of course). If it exists, that means a MATLAB instance is using the corresponding .mat file.
If successful, create a subfolder named as the instance’s process ID, and return. This is where the issue is!
If unsuccessful, that means another process has locked this variable. In that case, remove any previous (now inactive) process’s lock subfolders that were left behind due to interrupted processes (this ensures that a process that is no longer running is not the sole reason for a lock). Then try deleting the lock folder. If that fails, pause and repeat.
When I encounter the above error, I can restart the process and then it runs all the way through, so I know it’s not a path correctness issue.
I don’t know how to debug this any further, I’ve been using disp() but can’t make heads or tails of why mkdir would ever fail in this context.
function [pidPath, status] = makeLockFile(lockFolderPath)

%% PURPOSE: CREATE A LOCK FOLDER, BECAUSE MKDIR IS ATOMIC.
% Clean the lockFolderPath and add the process ID.
[folderPath, folderName] = fileparts(lockFolderPath);
pid = num2str(feature(‘getpid’)); % Get MATLAB instance’s process ID.
lockFolderPath = [folderPath filesep folderName];
pidPath = [lockFolderPath filesep pid];

status=false;
while ~status

disp([‘PID: ‘ pid ‘ Lock Folder: ‘ lockFolderPath]);
[status, message, messageID] = mkdir(lockFolderPath);

try
if ~status
% The variable is locked.
% Get the listing of all folders in the variable folder
items = dir(lockFolderPath);
folderItems = items([items.isdir]);
folderNames = {folderItems.name};
folderNames(ismember(folderNames, {‘.’, ‘..’})) = []; % Remove ‘.’ and ‘..’

% Get all of the active MATLAB PID’s
pids = getMATLABPids();

% Remove the inactive (leftover from previous processes) PID’s
inactivePIDs = folderNames(~ismember(folderNames, pids));
for i = 1:length(inactivePIDs)
rmdir([lockFolderPath filesep inactivePIDs{i}]);
end

% Try releasing the lock folder. Has no effect if folder is not
% empty (i.e. active process folders present)
releaseLockFile(pidPath);
continue;
else
% Make the folder for this specific process ID
mkdir(pidPath);
end
catch ME
disp([‘ERROR PID: ‘ pid ‘ Lock Folder Path: ‘ pidPath]);
disp({ME.stack.file});
disp({ME.stack.name});
disp({ME.stack.line});
rethrow(ME);
end
end

end

function [] = releaseLockFile(pidPath)

%% PURPOSE: RELEASE THE LOCK FILE.

status = rmdir(pidPath); % PID-specific folder.
pid = feature(‘getpid’);

lockFolderPath = fileparts(pidPath); % Parent folder (the lock folder)

status = rmdir(lockFolderPath); % Remove the folder only if it is empty.

end

function [pids] = getMATLABPids()

%% PURPOSE: GET ALL OF THE PROCESS ID’S FOR ALL MATLAB INSTANCES
if ispc==1
% Execute the command to get a list of all running MATLAB processes
[status, result] = system(‘tasklist /FI "IMAGENAME eq matlab.exe" /FO LIST’);

% Check if the command was successful
if status == 0
% Process the result to extract PIDs
lines = strsplit(result, ‘n’);
pids = [];
for i = 1:length(lines)
line = strtrim(lines{i});
if startsWith(line, ‘PID:’)
pid = extractAfter(line, ‘PID:’);
pids = [pids; {pid}];
end
end
else
error(‘Failed to execute system command. Status: %d’, status);
end
else
% Execute the command to get PIDs of running MATLAB processes
[status, result] = system(‘pgrep matlab’);

% Check if the command was successful
if status == 0
% Process the result to extract PIDs
pids = strsplit(strtrim(result));
else
error(‘Failed to execute system command. Status: %d’, status);
end
end

endI am writing parfor loops and using folders as "lock files" for thread safety because mkdir is atomic and I believe is therefore the best option in MATLAB for a "lock file". However, I am getting the following error:
Error using makeLockFile
The system cannot find the path specified.
This error occurs on the line in makeLockFile containing
mkdir(pidPath);
Here is my code for makeLockFile (top), releaseLockFile (middle), and the helper function getMATLABPids (bottom):
What I am trying to do is:
Create a "lock folder". This folder has the same path as a .mat file (except the extension of course). If it exists, that means a MATLAB instance is using the corresponding .mat file.
If successful, create a subfolder named as the instance’s process ID, and return. This is where the issue is!
If unsuccessful, that means another process has locked this variable. In that case, remove any previous (now inactive) process’s lock subfolders that were left behind due to interrupted processes (this ensures that a process that is no longer running is not the sole reason for a lock). Then try deleting the lock folder. If that fails, pause and repeat.
When I encounter the above error, I can restart the process and then it runs all the way through, so I know it’s not a path correctness issue.
I don’t know how to debug this any further, I’ve been using disp() but can’t make heads or tails of why mkdir would ever fail in this context.
function [pidPath, status] = makeLockFile(lockFolderPath)

%% PURPOSE: CREATE A LOCK FOLDER, BECAUSE MKDIR IS ATOMIC.
% Clean the lockFolderPath and add the process ID.
[folderPath, folderName] = fileparts(lockFolderPath);
pid = num2str(feature(‘getpid’)); % Get MATLAB instance’s process ID.
lockFolderPath = [folderPath filesep folderName];
pidPath = [lockFolderPath filesep pid];

status=false;
while ~status

disp([‘PID: ‘ pid ‘ Lock Folder: ‘ lockFolderPath]);
[status, message, messageID] = mkdir(lockFolderPath);

try
if ~status
% The variable is locked.
% Get the listing of all folders in the variable folder
items = dir(lockFolderPath);
folderItems = items([items.isdir]);
folderNames = {folderItems.name};
folderNames(ismember(folderNames, {‘.’, ‘..’})) = []; % Remove ‘.’ and ‘..’

% Get all of the active MATLAB PID’s
pids = getMATLABPids();

% Remove the inactive (leftover from previous processes) PID’s
inactivePIDs = folderNames(~ismember(folderNames, pids));
for i = 1:length(inactivePIDs)
rmdir([lockFolderPath filesep inactivePIDs{i}]);
end

% Try releasing the lock folder. Has no effect if folder is not
% empty (i.e. active process folders present)
releaseLockFile(pidPath);
continue;
else
% Make the folder for this specific process ID
mkdir(pidPath);
end
catch ME
disp([‘ERROR PID: ‘ pid ‘ Lock Folder Path: ‘ pidPath]);
disp({ME.stack.file});
disp({ME.stack.name});
disp({ME.stack.line});
rethrow(ME);
end
end

end

function [] = releaseLockFile(pidPath)

%% PURPOSE: RELEASE THE LOCK FILE.

status = rmdir(pidPath); % PID-specific folder.
pid = feature(‘getpid’);

lockFolderPath = fileparts(pidPath); % Parent folder (the lock folder)

status = rmdir(lockFolderPath); % Remove the folder only if it is empty.

end

function [pids] = getMATLABPids()

%% PURPOSE: GET ALL OF THE PROCESS ID’S FOR ALL MATLAB INSTANCES
if ispc==1
% Execute the command to get a list of all running MATLAB processes
[status, result] = system(‘tasklist /FI "IMAGENAME eq matlab.exe" /FO LIST’);

% Check if the command was successful
if status == 0
% Process the result to extract PIDs
lines = strsplit(result, ‘n’);
pids = [];
for i = 1:length(lines)
line = strtrim(lines{i});
if startsWith(line, ‘PID:’)
pid = extractAfter(line, ‘PID:’);
pids = [pids; {pid}];
end
end
else
error(‘Failed to execute system command. Status: %d’, status);
end
else
% Execute the command to get PIDs of running MATLAB processes
[status, result] = system(‘pgrep matlab’);

% Check if the command was successful
if status == 0
% Process the result to extract PIDs
pids = strsplit(strtrim(result));
else
error(‘Failed to execute system command. Status: %d’, status);
end
end

end I am writing parfor loops and using folders as "lock files" for thread safety because mkdir is atomic and I believe is therefore the best option in MATLAB for a "lock file". However, I am getting the following error:
Error using makeLockFile
The system cannot find the path specified.
This error occurs on the line in makeLockFile containing
mkdir(pidPath);
Here is my code for makeLockFile (top), releaseLockFile (middle), and the helper function getMATLABPids (bottom):
What I am trying to do is:
Create a "lock folder". This folder has the same path as a .mat file (except the extension of course). If it exists, that means a MATLAB instance is using the corresponding .mat file.
If successful, create a subfolder named as the instance’s process ID, and return. This is where the issue is!
If unsuccessful, that means another process has locked this variable. In that case, remove any previous (now inactive) process’s lock subfolders that were left behind due to interrupted processes (this ensures that a process that is no longer running is not the sole reason for a lock). Then try deleting the lock folder. If that fails, pause and repeat.
When I encounter the above error, I can restart the process and then it runs all the way through, so I know it’s not a path correctness issue.
I don’t know how to debug this any further, I’ve been using disp() but can’t make heads or tails of why mkdir would ever fail in this context.
function [pidPath, status] = makeLockFile(lockFolderPath)

%% PURPOSE: CREATE A LOCK FOLDER, BECAUSE MKDIR IS ATOMIC.
% Clean the lockFolderPath and add the process ID.
[folderPath, folderName] = fileparts(lockFolderPath);
pid = num2str(feature(‘getpid’)); % Get MATLAB instance’s process ID.
lockFolderPath = [folderPath filesep folderName];
pidPath = [lockFolderPath filesep pid];

status=false;
while ~status

disp([‘PID: ‘ pid ‘ Lock Folder: ‘ lockFolderPath]);
[status, message, messageID] = mkdir(lockFolderPath);

try
if ~status
% The variable is locked.
% Get the listing of all folders in the variable folder
items = dir(lockFolderPath);
folderItems = items([items.isdir]);
folderNames = {folderItems.name};
folderNames(ismember(folderNames, {‘.’, ‘..’})) = []; % Remove ‘.’ and ‘..’

% Get all of the active MATLAB PID’s
pids = getMATLABPids();

% Remove the inactive (leftover from previous processes) PID’s
inactivePIDs = folderNames(~ismember(folderNames, pids));
for i = 1:length(inactivePIDs)
rmdir([lockFolderPath filesep inactivePIDs{i}]);
end

% Try releasing the lock folder. Has no effect if folder is not
% empty (i.e. active process folders present)
releaseLockFile(pidPath);
continue;
else
% Make the folder for this specific process ID
mkdir(pidPath);
end
catch ME
disp([‘ERROR PID: ‘ pid ‘ Lock Folder Path: ‘ pidPath]);
disp({ME.stack.file});
disp({ME.stack.name});
disp({ME.stack.line});
rethrow(ME);
end
end

end

function [] = releaseLockFile(pidPath)

%% PURPOSE: RELEASE THE LOCK FILE.

status = rmdir(pidPath); % PID-specific folder.
pid = feature(‘getpid’);

lockFolderPath = fileparts(pidPath); % Parent folder (the lock folder)

status = rmdir(lockFolderPath); % Remove the folder only if it is empty.

end

function [pids] = getMATLABPids()

%% PURPOSE: GET ALL OF THE PROCESS ID’S FOR ALL MATLAB INSTANCES
if ispc==1
% Execute the command to get a list of all running MATLAB processes
[status, result] = system(‘tasklist /FI "IMAGENAME eq matlab.exe" /FO LIST’);

% Check if the command was successful
if status == 0
% Process the result to extract PIDs
lines = strsplit(result, ‘n’);
pids = [];
for i = 1:length(lines)
line = strtrim(lines{i});
if startsWith(line, ‘PID:’)
pid = extractAfter(line, ‘PID:’);
pids = [pids; {pid}];
end
end
else
error(‘Failed to execute system command. Status: %d’, status);
end
else
% Execute the command to get PIDs of running MATLAB processes
[status, result] = system(‘pgrep matlab’);

% Check if the command was successful
if status == 0
% Process the result to extract PIDs
pids = strsplit(strtrim(result));
else
error(‘Failed to execute system command. Status: %d’, status);
end
end

end parallel computing, parallel computing toolbox, mkdir, path, lock, system MATLAB Answers — New Questions

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Anyone know if it’s possible to do this?
Matlab’s web viewer (using web command on local file) shows HTML files that use MathJax just fine. However, when I index the HTML file in a helptoc.xml, so that the file can be viewed in the Help Browser, the MathJax rendered equations are not shown. I assume the javascript that loads MathJax isn’t even being run when viewing the file in the Help Browser, but perhaps there is a way.
MathML would be acceptible (and probably superior) but the Help Browser does not seem to support MathML at all.
I no interest in using Live Script or any other publishing solution built into Matlab. The HTML is coming from a source external to Matlab.Anyone know if it’s possible to do this?
Matlab’s web viewer (using web command on local file) shows HTML files that use MathJax just fine. However, when I index the HTML file in a helptoc.xml, so that the file can be viewed in the Help Browser, the MathJax rendered equations are not shown. I assume the javascript that loads MathJax isn’t even being run when viewing the file in the Help Browser, but perhaps there is a way.
MathML would be acceptible (and probably superior) but the Help Browser does not seem to support MathML at all.
I no interest in using Live Script or any other publishing solution built into Matlab. The HTML is coming from a source external to Matlab. Anyone know if it’s possible to do this?
Matlab’s web viewer (using web command on local file) shows HTML files that use MathJax just fine. However, when I index the HTML file in a helptoc.xml, so that the file can be viewed in the Help Browser, the MathJax rendered equations are not shown. I assume the javascript that loads MathJax isn’t even being run when viewing the file in the Help Browser, but perhaps there is a way.
MathML would be acceptible (and probably superior) but the Help Browser does not seem to support MathML at all.
I no interest in using Live Script or any other publishing solution built into Matlab. The HTML is coming from a source external to Matlab. matlab, mathjax, help browser MATLAB Answers — New Questions

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I am attempting to use era() to idetify a state space realization of my system and validate it using the compare() function. The system I am trying to identify is a steel cube with a heater attached to one side. The system starts at a state state of 0C and then heater applies an impulse flux to distrube the system.

When I use the compare() function to validate my system I see a good fit, but weird initial conditons. I am exspecting the inital conditons to be equal to 0 since all the data starts from steady state = 0C, however the compare() function estimates non-zeros initial conditions. Why is this happening?
Attached is my code and estiamtion / validation data sets.

Thanks in advance.I am attempting to use era() to idetify a state space realization of my system and validate it using the compare() function. The system I am trying to identify is a steel cube with a heater attached to one side. The system starts at a state state of 0C and then heater applies an impulse flux to distrube the system.

When I use the compare() function to validate my system I see a good fit, but weird initial conditons. I am exspecting the inital conditons to be equal to 0 since all the data starts from steady state = 0C, however the compare() function estimates non-zeros initial conditions. Why is this happening?
Attached is my code and estiamtion / validation data sets.

Thanks in advance. I am attempting to use era() to idetify a state space realization of my system and validate it using the compare() function. The system I am trying to identify is a steel cube with a heater attached to one side. The system starts at a state state of 0C and then heater applies an impulse flux to distrube the system.

When I use the compare() function to validate my system I see a good fit, but weird initial conditons. I am exspecting the inital conditons to be equal to 0 since all the data starts from steady state = 0C, however the compare() function estimates non-zeros initial conditions. Why is this happening?
Attached is my code and estiamtion / validation data sets.

Thanks in advance. system identification, validation MATLAB Answers — New Questions

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