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implemented reading from Matlab script.m
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| within KeyWordIO.Examples; | ||
| model ReadReal_m "Reads real parameters from m-file" | ||
| extends Modelica.Icons.Example; | ||
| import Modelica.Units.SI; | ||
| parameter String inputFileName = Modelica.Utilities.Files.loadResource("modelica://KeyWordIO/Resources/m/setParameters.m"); | ||
| parameter SI.Resistance R0=KeyWordIO.readReal_m(inputFileName, "data.R0"); | ||
| parameter SI.Resistance R1=KeyWordIO.readReal_m(inputFileName, "data.R1"); | ||
| parameter SI.Resistance R2=KeyWordIO.readReal_m(inputFileName, "data.R2"); | ||
| parameter SI.AngularVelocity w0(displayUnit="rpm")=KeyWordIO.readReal_m(inputFileName, "data.w0"); | ||
| annotation (experiment(StopTime = 1, Interval = 1E-3), Documentation(info="<html> | ||
| <p> | ||
| To store parameters for usage in Modelica and in Matlab/Simulink only once; | ||
| </p> | ||
| <ul> | ||
| <li>Create a Matlab script which sets the paramaters in a struct in workspace.</li> | ||
| <li>For comments, use Matlab.style \"%\".</li> | ||
| <li>Terminate the expressions with \";\".</li> | ||
| <li>Read this m-file from Modelica.</li> | ||
| </ul> | ||
| </ul> | ||
| </html>")); | ||
| end ReadReal_m; |
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| CaseExamples | ||
| ReadRealParameter | ||
| ReadReal_m | ||
| ReadRealCSV | ||
| ReadStringCSV | ||
| ReadStringCSVUnquoted | ||
|
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| % script file to set parameters in a Matlab-struct | ||
| data.R0 = 2; % 1st parameter | ||
| data.R1 = 2.2; % 2nd parameter | ||
| data.R2 = 2*3; % 3rd parameter | ||
| data.w0 = 1500*2*pi/60; % 4th parameter |
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@@ -7,7 +7,7 @@ class Contact "Contact" | |
| <p> | ||
| Anton Haumer<br> | ||
| <a href=\"http://www.haumer.at\">Technical Consulting & Electrical Engineering</a><br> | ||
| 3423 St. Andrae-Woerdern, Austria<br> | ||
| 93049 Regensburg, Germany<br> | ||
| email: <a HREF=\"mailto:[email protected]\">[email protected]</a><br> | ||
| </p> | ||
|
|
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| @@ -1,6 +1,7 @@ | ||
| UsersGuide | ||
| Examples | ||
| readRealParameter | ||
| readReal_m | ||
| readRealCSV | ||
| readStringCSV | ||
| readLineWithoutCache | ||
|
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| within KeyWordIO; | ||
| function readReal_m "Read the value of a Real parameter from m-file" | ||
| extends Modelica.Icons.Function; | ||
| import Modelica.Utilities.*; | ||
| input String fileName "Name of file"; | ||
| input String name "Name of parameter"; | ||
| input Boolean cache = false "Read file before compiling, if true"; | ||
| output Real result "Actual value of parameter on file"; | ||
| protected | ||
| Integer iline = 1; | ||
| String line; | ||
| Integer index; | ||
| Integer lenIdent; | ||
| String message = "in file \"" + fileName + "\" on line "; | ||
| Boolean found = false; | ||
| Boolean endOfFile = false; | ||
| algorithm | ||
| (line, endOfFile) :=KeyWordIO.readLine(fileName, iline, cache); | ||
| while not found and not endOfFile loop | ||
| if Strings.isEqual(Strings.substring(line,1,2),"//") or | ||
| Strings.isEqual(Strings.substring(line,1,1),"%") or | ||
| Strings.isEqual(Strings.substring(line,1,1)," ") then | ||
| //skip comment lines (even if comment has trailing blanks before "//" or "%") | ||
| iline := iline + 1; | ||
| else | ||
| index := Strings.find(line, "=", 1); //get position of "=" | ||
| if index <= 0 then //no expression | ||
| Streams.error("Erroneous expression without =" + message + String(iline)); | ||
| else | ||
| //strip trailing blanks of identifier part before "=" | ||
| lenIdent := Strings.find(line," ",1); | ||
| lenIdent := if lenIdent <=0 then index else min(index, lenIdent); | ||
| if not Strings.isEqual(Strings.substring(line, 1, lenIdent - 1), name) then | ||
| //identifier <> name: skip line | ||
| iline := iline + 1; | ||
| found := false; | ||
| else | ||
| //identifier == name: evaluate expression | ||
| //check for mandatory ";" after formula before optional comments | ||
| if Strings.find(line, ";", index+1) <=0 then | ||
| Streams.error("Expression not terminated by ;" + message + String(iline)); | ||
| else | ||
| (result, index) := KeyWordIO.Strings.expression(line, index+1, message + String(iline)); | ||
| found := true; | ||
| end if; | ||
| end if; | ||
| end if; | ||
| end if; | ||
| (line, endOfFile) :=KeyWordIO.readLine(fileName, iline, cache); | ||
| end while; | ||
| if not found then | ||
| Streams.error("Parameter \"" + name + "\" not found in file \"" + fileName + "\""); | ||
| end if; | ||
| annotation(Documentation(info="<html> | ||
| <h4>Syntax</h4> | ||
| <blockquote><pre> | ||
| result = <b>readReal_m</b>(fileName, name); | ||
| </pre></blockquote> | ||
| <h4>Description</h4> | ||
| <p> | ||
| This function demonstrates how a function can be implemented | ||
| that reads the value of a parameter from a Matlab script-file. | ||
| The idea is to keep parameters in Modelica and in Matlab/Simulink up to date. | ||
| The function performs the following actions: | ||
| </p> | ||
| <ol> | ||
| <li> It opens file \"fileName\" and reads the lines of the file.</li> | ||
| <li> If a line starts with \"% \" or \"// \" or \" \", it is skipped.</li> | ||
| <li> If a line starts with \"name = expression\" and the \"name\" | ||
| in this line is identical to the second argument \"name\" | ||
| of the function call, the expression calculator | ||
| is used to evaluate the expression after the \"=\" character. | ||
| The expression has to be terminated with a \";\". | ||
| After the \";\" a comment can follow.</li> | ||
| <li> The result of the expression evaluation is returned as | ||
| the value of the parameter \"name\". </li> | ||
| </ol> | ||
| </html>")); | ||
| end readReal_m; |