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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2
votes
2answers
116 views

How to extract data depending on Position of First zero?

I have a file (attached as an image) which I imported to Mathematica and only extracted the first and second column. My problem is that I want to extract the data beginning from the row where $A=0$. ...
4
votes
0answers
166 views

Single image import from stack via FTP connection

Background I would like to create a CDF document that is embedded on a webpage. The CDF will contain some image display ...
5
votes
1answer
276 views

windrose with data from Excel

How to Import data from excel and use them to Plot windrose instead? Example, {{Strength, Angle(degrees)}..} ...
3
votes
2answers
187 views

How to delete all rows in datafile that contain a string

I'm importing some data from a file. However, the file was created by an unreliable instrument, such that the data looks like this: ...
1
vote
2answers
180 views

Importing numerical data from RTF file

This might be a very simple question but I have been struggling with it for a couple of hours, so thought maybe someone here can show me a quick way of solving it. I have a file in rtf format ...
3
votes
2answers
208 views

Import numeric data into Mathematica

I have a C++ program that outputs a set of numbers at each time step. A blank line separates successive time steps. Here is an example of my data format: ...
2
votes
0answers
58 views

The “right” way to define a custom Encoding format?

I have implemented an Import|Export format for xz that behaves like gzip and other encoding formats: ...
0
votes
1answer
253 views

Import symbolic variables from Matlab with MATLink

I'm trying to manipulate with Mathematica symbolic expression created in Matlab. I'm using the MATLink package, and I've succedeed in importing numerical variables, but not symbolic ones : ...
8
votes
0answers
353 views

Import an SPSS, SAS, or STATA file into Mathematica

I would like to import the World Value Survey data file into Mathematica, but it's only given in spss, sas or stata formats, which are statistical analysis softwares format I think. I can't get to ...
8
votes
2answers
251 views

Problem importing a JCAMP-DX mass spectral file

I have some problems importing a JCAMP-DX EI-mass spectral file using Mathematica 9. For example, if I download the mass spectrum of nonacosane in JCAMP format from NIST, ...
6
votes
1answer
218 views

ReadList can't read correctly

I'm trying to load some data into Mathematica from some files generated by fortran. But ReadList seems can't get the number correct. Here is a simplified version of the problem: ...
0
votes
0answers
184 views

Calling a DLL with two inputs and one output

I need to call a DLL that requires two real number inputs to get one real output back. I can get one of the simple example uses of DefineDLLFunction to work, but I ...
1
vote
0answers
57 views

Getting InputStream errors when including a call to ElementData within an Import definition

So I am writing an ImportExport converter for a common chemistry file format, and I've run up against a problem that seems to be about shared streams and whatnot. ...
5
votes
1answer
465 views

ReadList can't read from file containing high-precision Reals

I want to read a file which contains seven columns of real numbers. Mathematica seems to have a problem with the high precision I need. My code: ...
4
votes
1answer
137 views

Import audio in uLaw format?

How do I import a uLaw-format audio file into Mathematica? Here's an example: hello-world.ulaw For reference, here's the same file in wav format: hello-world.wav As I understand it, the uLaw ...
-2
votes
1answer
286 views

Importing a stack of images [closed]

I have a stack of images with the file names C0001996_0000 , C0001996_0001 etc. In total I have $600$ images. I would like to ...
1
vote
0answers
62 views

Understanding the discrepancy between txt file import and export times, and possibly speeding up Import

I attempted to import a very short .txt file string using the Import command: ...
11
votes
3answers
933 views

How can I transfer mathematical expressions between Mathematica and Maple?

Is there a simple way to copy mathematical expressions between Mathematica and Maple (or at least in one direction)? I mean only expressions built from numbers and predefined mathematical functions, ...
4
votes
2answers
132 views

Workaround for Import not supporting the \leqslant TeX macro

$\{A\leqslant x\leqslant B\}$ Copy the code into Notebook, and you'll lose the less sign, this can be rendered well in ...
3
votes
1answer
266 views

how to delete specific data from text file and then update it

I have a large text file. I read data from text file one at a time and check whether data agree with my condition. If not I want to delete that data in text file and update it. For example say my ...
1
vote
2answers
232 views

Import image using InputField and Button

I've got a pretty basic problem, which is probably easily solved, but for all my efforts I haven't found a solution yet: I want to make an Image importer of the following form: An ...
5
votes
1answer
437 views

Failing to import an .eps file

I have an .eps file which was created using GLE. There is nothing wrong with the file, GS View can read it correctly. However, when I use Mathematica to read it using ...
5
votes
2answers
350 views

Change character encoding for file read using OpenRead

I have a large bzipped file that I want to read using OpenRead on a pipe with UTF8 encoding. Doing the following does not give me UTF-8 encoding. My ...
6
votes
1answer
333 views

Importing DICOM images

When I try to Import individual DICOM (.dcm) files from http://www.osirix-viewer.com/datasets/ datasets I can see the Elements listed in example files, ie: ...
3
votes
1answer
170 views

Importing a ragged array while ignoring rows that start with “#” [duplicate]

I am new to Mathematica, and I find that there may be a lot of ways of doing this. I was wondering which one might be the most general. I am importing data from ...
3
votes
0answers
107 views

Using data from multiple cameras

ImageCapture[] has an option Device-> for specifying which camera to use, but ...
5
votes
1answer
340 views

How can I log in to my Wikipedia account and access my watch list?

Wikipedia's "Edit Watchlist" page (for logged in users) has a list of hyperlinks to the user's watchlist (here is an example from my account). I've tried to use ...
5
votes
1answer
168 views

How to write an import converter that can import split and compressed files

First of all sorry if this question isn't formatted properly. I'm working with a data format that prescribes separate header and data files, so for instance ...
1
vote
1answer
58 views

Complex Values in TSV

I have some data in TSV format and am attempting to import it into Mathematica. Real values import just fine, but complex values keep on getting interpreted as strings. I attempted to figure out ...
-3
votes
1answer
228 views

import Excel sheets by name

I'm importing data from Excel. It appears that the sheet number needed in the Import statement is taken from the order that the sheets appear in the open Excel file. I need to import 2 of the sheets ...
2
votes
2answers
369 views

How to export a table of complex numbers?

I'm having problems exporting a table of complex numbers. I have: ...
5
votes
1answer
625 views

Importing specific elements from JSON

I'm having trouble importing JSON in the way I expect, based on my reading of the documentation. The particular issue I'm having is with importing a specific element, or list of elements. From the ...
0
votes
0answers
63 views

Connect to a MS Access database (*.accdb) [duplicate]

The JDBC Connections section of the help file http://reference.wolfram.com/mathematica/DatabaseLink/tutorial/DatabaseConnections.html gives me the impression that I can connect to a MS Access Database ...
2
votes
2answers
393 views

How can I remove text headers when importing a numeric table

I have a file let's say 1.txt having numbers like: fgdgfdg fhdfdh 0.000105533 1.00E-04 0.222281 1.00E-04 0.444456 1.00E-04 0.666631 1.00E-04 asdas ddfdsfsd 0.111193 0.166733 ...
1
vote
1answer
54 views

Export and Import with graphics characters

I exported a list of characters say: Export["hello.txt", {t, r, $\theta$, $\phi$}, "List"]; the file has the correct symbols when opened with a text editor, however, when I imported it with ...
4
votes
2answers
136 views

Equivalent of __FILE__?

Many languages define a special identifier whose value is the path to the source file currently being processed. (For example, in C, this is done through the ...
2
votes
1answer
1k views

Having Problem with Importing Excel file to Mathematica Notebook?

I have solved some equations and exported the final results, which they are several Matrices, as a EXCEL file ( .Xls ). Now, I want to use these EXCEL files as my inputs to solve some other equations. ...
4
votes
1answer
166 views

How to transform a DumpSaved .mx file to .m file conveniently?

I have many DumpSave-d .mx files under a directory. They are generated under Linux. The .mx ...
9
votes
2answers
633 views

Import tweets from Twitter

Robert Raguet-Schofield in the Mathematica Blog introduced a way to import tweets from Twitter into Mathematica. I attempted to use this method. I started with this line of code: ...
3
votes
1answer
165 views

Importing numerical values from a PDF file

I need the numerical values from pdf files like this one. When I use the usual Import command, the PDF imports, but pages of images. How can Mathematica be used ...
3
votes
0answers
90 views

Finding the argument set for internal functions in Mathematica v9.0

I've recently run into a problem with importing TIF stacks in Mathematica: Slow import of multigigabyte TIF image stacks On the advice of Simon Woods and others, I've been looking into the behavior ...
16
votes
1answer
831 views

Slow import of multigigabyte TIF image stacks

Update 6: After contacting Wolfram Technical Support, I was advised that the frame-to-frame import timing variability can be eliminated by reading in the frame stack from frame to frame with the ...
2
votes
2answers
192 views

Modifying imported 3D file

Since I am visualizing my work using Mathematica, I import some 3D models of molecules to my notebook. So, the question is, is there any way to modify somehow that imported models inside Mathematica ...
3
votes
2answers
622 views

Importing data into an array, column by column

I'm building a large matrix having different sized rows consisting of a few columns. The different columns are imported .txt files. Why can't I build the matrix column by column? For example, I ...
0
votes
0answers
70 views

Importing specific columns of a .txt file [duplicate]

I have text delimited file, with data in four columns. How to use ReadList to extract only the first and the fourth column.
3
votes
2answers
231 views

Speeding up TIF import

After trying to import a $\approx 2$ GB TIF file with the Import command, I noticed that the process takes $\approx 15$ minutes or so, which seems excessive, especially when compared to other software ...
1
vote
2answers
578 views

Import Spreadsheet Data and DeleteCases of empty cells &/or choosing a Range to import

I am importing Excel spreadsheet data into Mathematica. Here is what the data looks like, notice the cell Q1 with "sdf": I import this data by specifying the Spreadsheet location, sheet name, top ...
7
votes
1answer
611 views

How to read data from IBM 32-bit floating point binary file ? (not the common IEEE !!!)

I am trying to read a binary file. This file records seismic data. Basically its first 3600 bytes are for the general file information, following are for seismic traces, each begins with 240 bytes for ...
4
votes
0answers
197 views

Strange behavior of undocumented RawArray and ArrayObject expressions

I discovered several strange results and inconsistencies while trying to understand what undocumented RawArray and ArrayObject ...
2
votes
1answer
680 views

How to import a Microsoft Word document into Mathematica?

I have a Microsoft Word document in DOCX format. I need to import it into Mathematica as a String preserving all formatting (font, size, bold/italic style, colors, ...