Questions about getting data, files, images etc. from various formats into a form that can be read, tranformed and manipulated by Mathematica

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0
votes
2answers
38 views

Use modified part of file path as new file name

i want to import an image, modify it and then export the modified image. Something like this: img = Import["C:\\Images\\e4271-5.jpg"] Some modifications ...
1
vote
2answers
107 views

Convert imported PDF to an image

I've looked through the forum and have not seen an answer for this. I would like to be able to import a pdf document in which each page contains an QR code. I want to then use the Barcode reader ...
0
votes
0answers
43 views

How to open *.sif files with Mathematica

While I am processing my data collect from an Andor EM-CCD, I find it diffcult to import the file into mathematica. I think mathematica can open this kind of files since that Matlab can open it. So if ...
3
votes
1answer
94 views

How can I read compressed .z file automatically by Mathematica?

When I read .Z file by something like jpldatstring = Import["ftp://cddis.gsfc.nasa.gov/products/jpl/2003/jplg0040.04i.Z"] Unfortunately, it turned out that ...
3
votes
1answer
76 views

Easiest way to parse semi-structured text file

I have a plain text file with some data. I need two things: Be able to extract certain values for the various field, e.g. to extract the 'Mean Dose [%]', that is to extract number ...
0
votes
1answer
40 views

Importing Selected Spreadsheets [duplicate]

Consider the PISA study report, which contains dozens separate spreadsheets in each respective excel files (see http://www.oecd.org/pisa/keyfindings/pisa-2012-results-volume-iv.htm) Is there any way ...
1
vote
0answers
35 views

Import file size capacity for Mathematica

I am trying to import a large data set (.csv) into Mathematica. The data set contains more than 14 million rows, is this something Mathematica can handle? If not, what is the maximum capacity? I have ...
2
votes
2answers
90 views

How to SemanticImport Multiple Excel Sheets

I have an Excel workbook with multiple sheets that I'd like to import into a dataset each. With Import I can target individual sheets by their name into a nested ...
2
votes
1answer
52 views

Import selective elements from mixed (text and numbers) data file

How can I import only the 2nd and 5th elements (numbers, located in the 2nd and 5th columns) from all n raws of a data file (.xlxx) that contains both numbers and text. Imported data be inserted into ...
4
votes
1answer
109 views

Incorrect result with SemanticImport

I might use this incorrectly. I want to use a .csv file that as list looks {{"Group", "data 1", "data 2"}, {"a", 1, 5}, {"a", 2, 3}, {"a", 4, 5}, {"b", 8, 9}} ...
1
vote
0answers
46 views

Problem with importing numbers resulting from an executed file in Mathematica [on hold]

I am running Mathematica 10 and I have a mathematica file, MBdebug.m, that contains the line val = Import["! ./MBpart1ep0", "Table"]; MBpart1ep0 is an ...
6
votes
1answer
116 views

Understanding `Paste` and how to get a string from the Clipboard to use with `ImportString`

Trying to work on this question I got distracted by my first naive attempt of copying the data and then typing dat = ImportString[Paste[], "Table"] ...
4
votes
3answers
130 views

Importing High Precision (22 digits) data from a file

I want to import list from a file and I am using ReadList but my data is in format like this 8.2457409790900004e+08 but it i being imported like $8.24574*10^8$. Is ...
3
votes
1answer
82 views

Importing FITS file from HEALPix

I am trying to read FITS file created by HEALPix software. The file contains a spherical map of a scalar field. There is the online support on how to use the file in IDL, but not for Mathematica. I ...
3
votes
1answer
124 views

Import iTunes xml data and convert it into a dataset or table

I have an xml file with song data from iTunes (https://dl.dropboxusercontent.com/u/1012958/iTunes%20Library.xml) and I'd like to import it to Mathematica to do some statistics. I get an XMLObject like ...
3
votes
2answers
198 views

Why does a certain CSV file import properly into LibreOffice but not into Mathematica 10.0?

I'm working on a project involving data manipulation and it involves working with CSV files. I know that the files are properly formatted as when I import them into LibreOffice, all of the columns ...
4
votes
1answer
56 views

Tools for Importing/working with SEED seismographic data in Mathematica?

Do you know if exist a library or a package in order to import and work with SEED Seismographic data in Mathematica?
4
votes
2answers
89 views

Importing multiple images for machine learning classification

I want to create a ML classifier using images just like this example. I have two classes of images in two different folders. Is there an easier way to import all images from both folders rather than ...
1
vote
1answer
46 views

Importing additional custom data in DIMACS format

I have graphs in DIMACS format, with vertex colors specified. The vertex colors are denoted by lines n u c, where u is the ...
1
vote
4answers
114 views

Importing data to Mathematica

I exported the result on NMinimize with .dat format. The data looks like: Then I imported the data using: ...
0
votes
1answer
44 views

How to import a text file into Classify? [closed]

I have a text file like as follows. { "XXX" -> "A", "YYY" -> "A", "ZZZ" -> "B" } I'd like to import this so I can send it directly to ...
0
votes
1answer
52 views

Using variables in file names during import/export [duplicate]

I have 23 .csv files named as 0.csv, 1.csv.... I'd like to import those files one by one, perform some manipulation on the data and finally export it as "i+20".csv. "i" is the variable which in my ...
8
votes
1answer
266 views

How to execute JavaScipt on a webpage and then import the result on OSX?

I would like to import data from this page through Mathematica, http://www.oddsportal.com/soccer/netherlands/eredivisie/ . I tried importing through the default Import function ...
3
votes
0answers
97 views

Problem with FTP import in V10

Mathematica V10 returns an error when download directory. URLFetch :: invhttp: "FTP: could not retrieve (RETR failed) the specified file." V9 successfully retrieves the same reference. This ...
3
votes
1answer
216 views

Reading csv/xlsx data into Mathematica with column headings as list names

It's old question. However, I could not find satisfactory answer. Decided to post this question. I have a .csv file with column heading. How can I import this ...
10
votes
2answers
427 views

Parsing a CSV file using Interpreter

The new Interpreter functionality in version 10 looks like it has the potential to make parsing custom data formats very easy. I'm trying to create a CSV parser. ...
0
votes
1answer
55 views

Importing Output from Linux mpstat to Calculate Aggregate and Per-CPU Averages, Creating Tables and Graphs

I'm a Mathematica noob, running a trial version for the moment, but have run into the wall trying to handle this in Excel and am looking for other options. While running a benchmark application I'm ...
4
votes
1answer
203 views

How to clean up messy data

The start of my question is about one specific situation - I have some erroneous lat/long values in a dataset which I need to clean up. But I'd like it to cover the overall topic of cleaning up messy ...
1
vote
1answer
73 views

GIF file breaking Import

I'm working with a large number of historical image files and am playing around with extracting dominant colours, faces, etc. with Mathematica 10. Occasionally, however, I am running into files that ...
2
votes
2answers
75 views

Overwriting first line of large file

As mentioned, I wish to read the first line of a file, and if needed, overwrite it with a new string. The aim is to have a CSV with a list of possible elements. Example: ...
2
votes
1answer
58 views

How to read from /dev/random?

I am looking to read a few bytes from /dev/random on OS X and Linux. The simplest approach fails on both operating systems (see below). Why? What is a ...
3
votes
2answers
95 views

Lookup in Inverse Symbolic Calculator+ from Mathematica

There is a useful feature in WolframAlpha that allows to find a possible closed form for approximate numeric values. It can be used, for example, to guess the value of an integral that Mathematica ...
15
votes
1answer
268 views

Why does ImportString[“1c”, “Table”] eat the letter c?

I have some whitespace-separated matrix data that I read with Import[..., "Table"]. The data contained mixed strings and numbers (the strings are for row and ...
5
votes
1answer
239 views

Mathematica 10 doesn't support path containing Chinese characters

I tried to import file in Mathematica 10 ( windows 7 system), the path contains some chinese characters. After holding ctrl+shift, and drag the file into front end. I got path like ...
-1
votes
3answers
84 views

How do i import a list of files, choosing the name

I have this list of files, i'm using FileNames[{"*.txt"}, NotebookDirectory[]] to import it, but i just want the ones without inelastic on the name. How can i select just by the name? Thanks ...
4
votes
2answers
156 views

SemanticImport mis-interprets CSV

SemanticImport misinterprets rows with trailing blanks. Note the commas in the 2nd column: ...
0
votes
1answer
83 views

Loading and processing five files at a time from a directory containing many, many files

I have 3000 files (for example: aa101.csv, aa108.csv, aa120.csv, ...) and I need to process them. I need to load five files from a folder, process them, and export them to new list in Excel. Then I ...
2
votes
0answers
65 views

Antialiased text in manipulate constantly re-evaluated, ignores TrackedSymbols

I am trying to display antialiased text (using the ImportString[ExportString[]] method shown here) but inside a manipulate so that the text can be changed interactively. I have found a way to do this, ...
11
votes
2answers
182 views

ToExpression fails with long nested string expressions

Consider the following conversion from String to Mathematica Expression: ...
1
vote
0answers
72 views

Datastream to Mathematica

I currently use data from Thomson Reuters Datastream. With an add-in in Excel, the data can be requested. Because I need to use the data in Mathematica, and I need to update the data frequently: Is it ...
4
votes
0answers
71 views

Import Excel data forcing links (ie workbooks) to be updated

We have noticed importing data from an Excel spreadsheet doesn’t update links. The problem with this is if you import a spreadsheet that comprises of linked workbooks data and those workbooks have ...
5
votes
3answers
241 views

How do I save/export a list so that it can later be easily imported as a list again?

I have a couple of big lists (each of them contains elements that are themselves lists of two elements, i.e. an element of each list that I have is of the form {x, y}) that I want to save/export. ...
1
vote
2answers
66 views

Importing Text file and removing columns [closed]

I have a file that has 7 column but i only want to import two column from it, that is 1st and 3rd column from the file. How can i do that and this is the list for example: ...
1
vote
1answer
43 views

Registering/detecting an importer by file name extension

I've developed an importer and exporter for FreeSurfer's MGH/MGZ file format; the specific format isn't important, but I was ...
0
votes
0answers
40 views

importing a file with asterisk in its name (Linux machines)

I am trying to import a file: ...
5
votes
1answer
120 views

Reading specific entries from a CSV file

This question is related to the following: Speeding up Import and Export in CSV format Stream CSV files Reading periodic elements from a large file I have a set of very large CSV files (a few ...
0
votes
1answer
62 views

Import a data stored in EXCEL and change it to a Table [closed]

I have an EXCEL file in which large amount of numbers is stored in a column in the first sheet, like data in the column A of the sheet1 of excel file. When I apply the Import function; the data is ...
3
votes
1answer
92 views

Importing malformed XML: Import[… “XMLObject”] vs ImportString[…, “XML”]

It appears that Import[ url , "XMLObject" ] is more forgiving of improperly formatted XML than ImportString[ string, "XML"]. For ...
6
votes
3answers
250 views

Skip header lines on import

When importing a data file what are the comment symbols for Mathematica? That is, given a file like this blabla bulbul 1 2 6 54 7 ... .. what symbol do I have ...
2
votes
2answers
93 views

Importing Data and Devoting Their Names to Them

There are some files in a directory. I have used of SetDiroctory to access all of them. SetDirectory["C:\\Users\\SE7EN\\Desktop\\mathematica\\test"]; I can visit ...