I need to write a code that export different worlds depending upon the value of a global variable.
File names Variable(percent)
0.20 percent 0.20
0.25 percent 0.25
Are they any string comparison function available to do so? Also, how would I convert a variable to a string?
Just to make sure I understand, you have a global variable (percent) and you want to get a filename from that? In that case, you can just do:
(word "percent " percent ".csv")
Replace .csv with whatever file extension you want.
Related
I have a series of formatted numeric variables and I would like to convert them all into character variables assigned the corresponding values found in the format labels. Here is an example of the format:
proc format;
value Group
1= 'Experimental 1'
2= 'Experimental 2'
3= 'Treatment as usual';
run;
My variable Group_num has values 1-3 and has this format applied. I want to create a new character variable called Group_char which has the values "Experimental 1", "Experimental 2", and "Treatment as usual".
The (long) way I would do this would be:
data out;
set in;
format Group_char $30.;
if Group_num=1 then Group_char="Experimental 1";
if Group_num=2 then Group_char="Experimental 2";
if Group_num=3 then Group_char="Treatment as usual";
run;
However, I need to do this to 13 different variables and I don't know what their variable values, format names, and format labels are without looking at the data more. Preferably, I would want to use whatever format is already applied to the variable to automatically translate it into a new character variable, without needing to know the format name/labels or original variable values. However, if I need to find out the format name to create a new character variable just by using the format name, that would be better than needing to also know the original variables values and format labels as well.
Alternatively, another way to solve my problem would be if you could tell me if there is a way of importing SPSS datasets using variable value labels only, and leaving the values themselves out of the picture entirely, such that numeric variables with value labels are imported as character variables.
Thank you
First off, it's usually best not to do this - most of the time that you need the character bits, you can get them off of the formats.
But, that said... you need to look at the vvalue function.
data want;
set have;
var_char = vvalue(var_num);
run;
vvalue returns the formatted value of the argument.
How does one write or print multiple variable outputs with headers, line by line per tick to command center in netlogo? the idea is to print out ticking results of more than one variable (reported by procedures) so that it appears in they appear as follows in the command center output window:
length weight height area
24.2 23.1 22.0 25.1
18.7 19.2 10.4 22.0
and so on, updating per tick in columnar form.
I eventually want to be able to use the export-output command to transport the output to a csv file at the end of the simulation run. I know there are other ways of doing this but I want it this way specifically for a reason.
You need the type and print commands. Your heading would need to be printed during initialisation and the variable values would need to be printed each tick. Assuming your procedures are named cal-length etc, code would look something like this. Note that there is no spacing control or other formatting.
to setup
...
print "length weight height area"
...
end
to go
...
dump-to-screen
...
end
to dump-to-screen
type calc-length type " " type calc-weight type " "
type calc-height type " " print calc-area
end
I have several tables in matlab that and I would like to write all to one .csv file, vertically concatenating. I would like to keep the column names from each table as the top row, and would like to use a loop to write the csv. The ultimate goal is to read the data in to R, but R.matlab did not work well. Suggestions about how to do this?
Alternatively how can I change filenames in a for loop using the iterator?
e.g. along the lines of
for i=1:10
writecsv('mydatai.csv',data(i))
end
So I must have at the end 10 csv files as output.
You can change the filename within the loop by using for sprintf string formatting function, for example:
dlmwrite(sprintf('mydata%i.csv', i), data(i) )
Note that the %i portion of the string is the sprintf formatting operator for an integer, it is just a coincidence that you also decided to name your iterator variable 'i'.
You can append extra data to an existing CSV by using the dlmwrite function, which uses a comma delimiter as the default, and including the '-append' flag.
Another way would be to use
writetable(Table,filename )
and to change file name after every alternation you can use
filename = ['mydata' num2str(i) '.csv']
I want to save the value of a variable from MATLAB command history in a text. I am trying the command:
Save([d:/work/abc.txt], 'z1', '-ASCII');
An error appears
Error: input charecter is not valid in MATLAB environment or expression.
What you are missing are the quotes within the brackets for denoting string.
['string']
You should use save (with lower case for "s").
Also the filename should be defined as a string: enclose it withi two '; also you do not need the [] unless, for example, you want to build a string using a variable and / or any function to create part of the filename (e. g.
['d:/work/abc_' num2str(k) '.txt']
assuming k value is 3) to get d:/work/abc_3.txt
Try change your code to:
save(['d:/work/abc.txt'], 'z1', '-ASCII');
Hope this helps.
Qapla
I have a few questions regarding combitimeTables: I tired to import a txt file (3 columns: first time + 2 measured data)into a combitimeTable. - Does the txt file have to have the following header #1; double K(x,y) - Is it right, that the table name in combitimeTable have to have the same name than the variable after double (in my case K)? - I get errors if i try to connect 2 outputs of the table (column 1 and column2). Do I have to specify how many columns that I want to import?
And: Why do i have to use in the path "/" instead of "\" ?
Modelica Code:
Modelica.Blocks.Sources.CombiTimeTable combiTimeTable(
tableOnFile=true,
tableName="K",
fileName="D:/test.txt")
Thank you very much!
The standard text file format for CombiTables is:
#1
double K(4,3)
0 1 10
1 3 20
2 5 30
3 7 40
In this case note the "tableName" parameter I would set as a modifier to the CombiTable (or CombiTimeTable) is "K". And yes, the numbers in parenthesis indicate the dimensions of the data to the tool, so in this case 4 rows and 3 columns.
Regarding the path separator "/" or "\", the backslash character "\" which is the path separator in Windows where as the forward slash "/" is the path separator on Unix like systems (e.g. Linux). The issue is that in most libraries the backslash is used as an escape character. So for example "\n" indicates new line and "\t" indicates tab so if my file name string was "D:\nextfolder\table.txt", this would actually look something like:
D:
extfolder able.txt
Depending on your Modelica simulation tool however it might correct this. So if you used a file selection dialog box to choose your file, the tool should automatically switch the file separator character to the forward slash "/" and your text would look like:
combiTimeTable(
tableOnFile=true,
tableName="K",
fileName="D:/nextfolder/table.txt",
columns=2:3)
If you are getting errors in your connect statement, I would guess you might have forgotten the "columns" parameter. The default value for this parameter comes from the "table" parameter (which is empty by default because there are zero rows by two columns), not from the data in the file. So when you are reading data from a file you need to explicitly set this