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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10
votes
1answer
538 views

How to import date (YYYY-MM-DD) data from a file?

I have a file with data in form {date, value}: 2010-05-19 17 2010-05-20 20 ...
10
votes
1answer
341 views

Possible to import Excel formatted text?

Is it possible to import Excel text markup such as underlines? For example: Yet ...
10
votes
3answers
979 views

Is it possible to import dates and times directly as AbsoluteTime and by pass DateLists?

Date and time calculations are quite slow so I am exploring ways to minimize the number of calculations performed. As an example: ...
10
votes
1answer
490 views

Data acquisition from a Measurement Computing USB device

I would like to use Mathematica 9 for to acquire data from a Measurement Computing (MC) USB-201 analog to digital (and other) device for classroom demonstration. I do not have a budget to buy LabView ...
10
votes
0answers
215 views

Getting EPS imports to respect the original fill rule

One major problem in my attempt to answer to the CountryData flags question is that the way Mathematica handles filled curves differs from the way SVG and EPS style editors do. The latter two have the ...
9
votes
5answers
786 views

convert long string to integer list

at first, i would like to thank all the people here. i'm working with mathematica for half a year now and always found great advice and tricks. now, i came up with a problem i couldn't find a ...
9
votes
2answers
937 views

How can I animate a set of points imported from file?

I have an external program which generates a set of data - X points at the time t1, X points at the time t2 and so on. These points are stored in CSV file and I can change the format if necessary. ...
9
votes
2answers
253 views

Behavior of ImportString in Mathematica

I tried the following commands ...
9
votes
3answers
1k views

Importing HDF5 with compound data

I am looking to Import HDF5 data with compound data. It appears, at least from what I read, that Mathematica 8.0.4 (and previous versions) does not support reading ...
9
votes
2answers
855 views

Exporting data from Excel into Mathematica using clipboard

I know that it's possible to import Excel data into Mathematica using the Import command, as we can see in this post. But some times, I need just to do some fast ...
9
votes
1answer
281 views

Wikipedia People only search

I am trying to search people from Wikipedia(For example .*John.* in REGEX). The following query is close, but it isn't generalized like ...
9
votes
2answers
142 views

Inconsistent behavior of undocumented Encode->Import->StringToStream->Get on password-locked stream

Let's save a definition. Encode it with password/key and Get it again. We will not use Get ...
9
votes
2answers
745 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: ...
9
votes
0answers
412 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
1answer
179 views

Import the “thumbnail” of an internet page

I have a list of internet sites links from which I would like to automatically recover the page image/thumbnail and page title. Let's suppose that one of the links is https://www.google.com/, I would ...
8
votes
2answers
2k views

Speeding up Import and Export in CSV format

I am handling large numerical data in Mathematica. In smaller problems everything worked fine using Export and Import with the ...
8
votes
4answers
754 views

Import values from tab separated file, change decimal point?

I have files that look like this: ...
8
votes
2answers
273 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, ...
8
votes
2answers
224 views

Working with Java hashmaps from Mathematica

I'm using J/Link to access data from an external Java program. The data are represented as a ConcurrentHashMap (see the official specification here). ...
8
votes
2answers
407 views

Look up info associated with a given CAS chemical identifier from the NIST webbook & NCI CADD Chemical Identifier Resolver

I would like to retrieve information associated with a given CAS registry number (Chemical Abstracts Service nr) from the NIST webbook web site in Mathematica, using the provided API (e.g. for ...
8
votes
2answers
4k views

Import selected columns from a tab delimited text file

I have a very huge file (1GB) from which I desire to import only the 5th column. It is a tab delimited text file with a .txt extension. Can you please help me with ...
8
votes
1answer
371 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 ...
8
votes
2answers
327 views

Why doesn't DumpSave work for elements created within a local notebook context?

I recently noticed that when dealing with notebooks with local context, I cannot successfully DumpSave variables, or, rather, when I call ...
8
votes
1answer
570 views

How to properly DumpSave & Get Global`s symbols inside packages while not touching Global context?

For efficiency reasons I prefer to use DumpSave instead of Save. For ease of access I prefer to save symbols in ...
8
votes
1answer
395 views

How to import a large (~50Mb) json file in mathematica

I am trying to import a 46Mb json file into mathematica (which by the way I exported using mathematica) but its failing with the following messages: ...
8
votes
1answer
299 views

Exporting German Umlauts to PDF and importing them doesn't work - character encoding problem

I am using Mathematica 9.0.0.0 under German Windows 32bit. I am on trying to export and import German text to PDF and re-import it. It seems that there is a confusion about the character encoding. It ...
7
votes
3answers
323 views

Unencoding encoded URLs in a function

Is there a built-in function for decoding encoded URLs in Mathematica? I would like to convert an encoded URL, for example ...
7
votes
3answers
791 views

Efficient image Import

I have several sets of 20 images I need to import. Each time they have different categories. "Name"<>"Cat"<>"No" Electric B 1 for example. I need to create lists that contain the images ...
7
votes
1answer
157 views

How to use RunProcess to import external function?

I have a functions written in an external language called GO. How can I quickly load them into the kernel for use as Mathematica functions? The two ways I've tried are with MathLink and LibraryLink ...
7
votes
2answers
1k views

Import Fortran unformatted binary

I have an unformatted binary file generated using the Compaq Visual Fortran compiler (big endian). Here's what the little bit of documentation states about it: The binary file is written in a ...
7
votes
1answer
164 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"] ...
7
votes
3answers
1k 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 ...
7
votes
1answer
3k views

How to extract sample values from an imported WAV file?

Suppose I read a file with B = Import["something.wav"] Now how can I obtain a list of sample values?
7
votes
1answer
197 views

Incorrect result while using SemanticImport for CSV file import

I might use this incorrectly. I want to use a .csv file that (as list) looks like: ...
7
votes
1answer
255 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 ...
7
votes
2answers
2k views

Difficulties with Importing PDFs in Mathematica

I am trying to import a group of PDFs that I have downloaded (it is in the realm of 1,000+). They are a group of doctoral dissertations that I'm trying to automatically extract bibliographic ...
7
votes
1answer
377 views

Mathematica 10 doesn't support path containing Chinese characters

Note: This works correctly in version 10.0.2. 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 ...
7
votes
1answer
150 views

Organizing similar datasets using Contexts or otherwise

I often import several long time series to analyze something about a city. When I have multiple cities, I use contexts. As a simple example, ...
7
votes
1answer
225 views

Assign the contents of a “Copy” operation programmatically to a variable?

While an earlier question Cut and paste data from a spreadsheet nominally addresses the issue, a year has past since its OP asked it and I hope that others have come across simpler or more direct ...
7
votes
1answer
766 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 ...
7
votes
1answer
84 views

Is it possible to move .mx file from one server to other?

I have mathematica file in one server along with .mx file. Is there any way to move the .mx file from one server to other such ...
7
votes
1answer
257 views

Creating time-lapse movies with Mathematica

Well, my question is this: Is that possible to make time-lapse movies with Mathematica? Here is some more explanation: Watch this YouTube video that is a wonderful example of time-lapse movies. ...
7
votes
1answer
405 views

Converting XMLElement objects to plain text

Short version: How can I convert an XMLElement that represents part of a HTML document to plain text? Long version: The more general problem is extracting ...
7
votes
1answer
134 views

Using Differences on data: trouble with floats and doubles

Consider the following data set (after I have run FullForm), which is imported from a file (stored typically as 10.040): ...
7
votes
1answer
2k views

Import DCD (CHARMM/NAMD binary trajectory) file

How can one import the coordinates stored in a binary CHARMM/NAMD DCD file? This is the structure of the file: ...
7
votes
1answer
269 views

ReadList can't read correctly

Bug fixed in version 10.0.2 on Linux 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 ...
7
votes
1answer
826 views

Import file from FTP site

I would like to Import files from an FTP site. The code below works on a test site: file = Import["ftp://test:test@ftp.secureftp-test.com/pigs.xml"]; But when I ...
7
votes
0answers
270 views

What are the known differences between Save and DumpSave, and how to account for them?

Edit: I changed the title and (slightly) the wording of this question in order to make it more easily answerable. If I evaluate this in Mathematica 9: ...
6
votes
3answers
186 views

Is it possible to Import urls not type “”

These days I often copy urls from Internet Explorer's address bar. When I paste the url into a Mathematica cell it is neither a string nor a expression. ...
6
votes
2answers
769 views

Why does importing a URL fail the second time and produce a FetchURL::conopen error?

I have Mathematica code that uses Import[] to download URLs. I noticed that first time I use the Import[] command it works. ...