I have to write the function that determines the number and values of block attributes in lisp. I do not have any idea for this. Could you help me?
Does the software that your using not have an attribute out function that can be typed into the command line like ATTOUT? If so, then try opening the file with a spreadsheet application, like Excel.
Related
I am trying to use the MATLAB scripts shipped with Dymola to post-process the output result of Dymola. But in some cases, the output data in the .mat file only have 2 elements, how could I get the data between 10s and 100s in this kind of cases?
It's a parameter or variable that is not time depending so it's stored in a compact way. I understand the mechanism, but it is not user-friendly when post-processing the data in MATLAB, I have to find the "wrong" dimensional data. How could I fix this issue?
I recommend creating some simple logic that looks at the size of the variable and then automatically puts it into some dictionary, list, etc. From there you can manipulate the variable. I know you are asking for Matlab but here is a Python solution that I have used which may help you get started:
varNames_param_base=[]
varNames_var_base=[]
for i, val in enumerate(r.varNames()):
if np.size(r.values(val)) == 4:
varNames_param_base.append(val)
else:
varNames_var_base.append(val)
I used those lines in this file.
In the example r.varNames() is a list of all the variable names (i.e., strings) which are read from the resulting Dymola .mat file. r.values gets the value of the variable name currently being used in the for loop (i.e., val).
You may also consider converting your result file to SDF (a simple HDF5 representation), because that format does not use any clever storage options (if I remember correctly).
I am working on this project which requires analyzing a large (>50GB) dataset in a server, both in Stata and MATLAB. Both parts are required and I cannot use only one of them.
My ultimate goal is to generate a .tex file named something like commands.tex which looks like this:
\newcommand{\var1}{val1}
\newcommand{\var2}{val2} % MATLAB file matlab_file.m on DD/MM/YYYY
\newcommand{\var3}{val3} % Stata file stata_file.m on DD/MM/YYYY
...
where variables are ordered alphabetically and each of the values is most probably a number. Note that the commands in the comments would help me trace where did I generate the values. The usage of the file is so that after a preamble I can use LaTeX on the following way:
<preamble>
\input{commands.tex}
\begin{document}
Variable 1 has a value of \var1 and variable 2 has a value of \var2.
\end{document}
The purpose of this is so that I can analyze locally (or remotely) a sample, say of 0.1 or 10 percent of the total observations, write a report with those, and then run the analysis again with a bigger size. I want to completely eliminate the chances of me copying a number wrong.
I am trying to write some code both in MATLAB and Stata, but I think that is beyond my expertise, and would be very grateful if someone could help me figure out how to do it. To be honest, I feel I would be able to do the MATLAB part but the Stata I have no idea.
Stata code
What I am trying to do is to generate a command that takes as an input a name and a scalar and as an output defines the corresponding variable in my commands.tex file detailed above. My goal is to be able to generate something like this:
sysuse auto
reg price weight
define_variable PriceWeight = _b[weight], format(%4.2f)
and what I hope the code to do is that:
If \newcommand{\PriceWeight} does not exist in commands.tex then it adds its value to the list, preserving the alphabetical order.
If the variable exists then it deletes its value and rewrites above it, with the value given in the scalar.
I know how to give the values to a program in Stata, but I do not exactly know how to use those values and perform the necessary commands. The syntax is something like:
program define define_variable
syntax anything = X, [format(string)]
<other code>
end
Note: Of course, I need something way deeper than regression coefficients, but as a simple example this would suffice.
MATLAB code
This seems to be easier in MATLAB, but I do not know exactly how to automate the process. In MATLAB what I want to be able to do is something like:
clc; clear;
PriceWeight = 3
define_variable('PriceWeight',PriceWeight,format)
again where it automatically goes to the single file and updates it accordingly. Any hel[p with be very much appreciated.
Based on your comments and assuming that your file with all relevant variables is not huge, I would suggest getting your data from Stata to Matlab, and update your variables there as necessary (using functions such as exist or strcmp if you have a list of names). A quick google search gives me this link for Stata to Matlab.
To make it easy to process you might want to create a cell (I will call C), where one column contains all variable names and one column contains the scalar values.
Then, once you have assembled all your variables, you can sort your cell alphabetically and write it to a file using this.. Of course you would write a .tex file, and then iterate over your cell with something like
fprintf(fID,'\newcommand{\%s}{%f} ',C{i,1},C{i,2})
I hope this is understandable and helps.
When I use the readtable function I get the following error:
IVcellData = readtable('RiskModelData','Sheet',2,'Range','A1:A49')
Error using readtable (line 129) Invalid parameter name: Sheet.
Would appreciate if anyone could help me.
Have you renamed Sheet 2 to something else, e.g. Datafile? If so, you need to use this name (inside single quotes) not the sheet number instead of 2 in that call.
Also, you need to make a call to
opts = detectImportOptions(yourfilename)
before the call to readtable. I suspect this one is this cause as it is not recognising Sheet as a variable.
Took me a while to discover that lot, mostly empirical as the documentation is not clear on that point.
Keith
Looks like you need to define extension:
T = readtable(filename) creates a table by reading column oriented data from a file.
readtable determines the file format from the file name's extension:
.txt, .dat, or .csv for delimited text files
.xls, .xlsb, .xlsm, .xlsx, .xltm, .xltx, or .ods for spreadsheet files
try ReadModelData.xls or .xlsx
I am analyzing some data and I need to load the information from a file. I wrote a script which contains the following line:
load('../Psychopy/DataPrueba/Estefi_1_datos.mat');
I'm wondering if there's anyway to write something like:
Name=Estefi;
load('../Psychopy/DataPrueba/Name_1_datos.mat');
Because it's data from an experiment, I have to do with 40 people at least and that little change in the script would automatize my work quite a lot.
You can do it like this:
Name='Estefi';
load(['../Psychopy/DataPrueba/',Name,'_1_datos.mat']);
Two things to note:
The variable Name has to be a string (use ')
You have to use square brackets ([]) around the combination of strings and your variable.
I need to create a matlab mfile that will run another matlab file with default values given in a txt file. It's ment to be useful for testing programs, so that user may specify values in a txt files and instead of inputing values every time he starts the program, my script will give the program default values and user will only see the result.
My idea is to load tested file into a variable, change 'variable=input('...');' for variable = default_variable;, save it to tmp file, execute, and than delete tmp file. Is this going to do the job?
I have only two problems:
1) How to eliminate the problem of duplicated variable names - i mean this must work for all scripts, i don't know the names of variables used in tested script.
2) As I wrote before - is this going to work fine? Or maybe I missed a easier way to do it - for example maybe I don't have to create a tmp file?
I really need your help!
Thanks in advance!
If the person who has to edit the default values has access to Matlab, I would recommend saveing the values in a mat file and loading them when needed. Otherwise you could just write a smalls cript that contains the assignment to certain variables, but make sure to keep this small. For example:
maxRuns = 100;
clusters = 12;
So much for setting up the defaults. Regarding the process my main advice is to wrap the thing that you want to test into a function. This way variables used in the code to call the 'script' will not interfere as a function gets its own separate workspace. Check doc function if you are not familiar with them.