stats(deprecated)/importdata - Help

Online Help

All Products    Maple    MapleSim

Home : Support : Online Help : stats(deprecated)/importdata

stats[importdata] - Read Statistical Data from a File

Calling Sequence

stats[importdata](filename, n)

importdata(filename, n)




name of the file to be read



(optional, default=1) number of streams into which to split the file data



Important: The stats package has been deprecated. Use the superseding package Statistics instead.


The function importdata of the stats package reads statistical data from a file.


The data in the file are just a sequence of numbers, separated by spaces or the end of line. They will be processed by a sscanf(..., `%f`).


The character # introduces a comment that ends at the end of that line.


Missing data are represented  in the data file by the * character. It will be converted to the keyword missing.


If the number of streams, which is indicated by the parameter n, is one, the data in the file given by filename are returned as an expression sequence. If the number of streams is greater than one then the data in the file are returned as an expression sequence of n lists. The first item in the file goes into the first list, the second item goes into the second list, and so on, until there is an item in each list. The next item in the file then goes at the end of the first list, and so on until the whole file is imported.


More sophisticated data files can be read using readline and sscanf. The function {readdata} is very similar to stats[importdata].


The command with(stats,importdata) allows the use of the abbreviated form of this command.


Important: The stats package has been deprecated. Use the superseding package Statistics instead.



where the datafile could contain the following ------------------------

| # this is a comment

| 2 3

| 4 5

| 6 * # one missing data

| # another comment


At the end T will be


See Also

readdata, readline, sscanf, Statistics, stats(deprecated)[data], transform(deprecated)[split]

Download Help Document

Was this information helpful?

Please add your Comment (Optional)
E-mail Address (Optional)
What is ? This question helps us to combat spam