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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3
votes
1answer
192 views

Import a table from a text file or string

XYScan produces results in the following form (as *.txt): ...
0
votes
0answers
29 views

Save lists to re-open with Mathematica [duplicate]

I want to save a result of a computation in a file to re-open then in Mathematica in a new session. What is the most efficient and simple way to do this? To be specific, I am using ...
0
votes
1answer
167 views

Network/Graph Visualization read edgelist

I have what it seems to be a very trivial question, but after searching for hours I was not able to find an answer, so I am asking here. I have an edgelist for a graph, a 2 column csv file with ...
2
votes
1answer
179 views

Dynamic importing of json file is not refreshing

Running Dynamic[Refresh[Import["foo.json"], UpdateInterval->1]] or json := Import["foo.json"] then ...
2
votes
1answer
42 views

Import variable assignments from external files into different contexts

(I use Mathematica 9.0.1 on OS X 10.10.5.) I have two text files. One is named file1.txt with the contents ...
1
vote
1answer
191 views

Import camera parameters and data from *.sif image files? [closed]

By default, Andor's line of scientific cameras saves data in an apparently undocumented *.sif format. Are there any Mathematica packages or code that can help import these data? I've inherited an ...
1
vote
0answers
82 views

Import a column of data, make a sum on them [closed]

I import a data file, then do calculation on it and after that I want to sum on my output data. Here is my sample code: ...
1
vote
2answers
60 views

How do I import a non-directed graph in graphml format?

I have created a graph with undirected edges, and I'm trying to import it into Mathematica. However, when I import it, I get directed edges. ...
0
votes
1answer
36 views

Import n'th data from a file and do calculation on it [closed]

I want to import a n'th data from a data file and then do some calculation on it. Here is may sample code: ss = Import["myfile.data", {"Words", 3}] gg = ss + 1 ...
0
votes
0answers
54 views

Using Import during initialization, i.e., in an init.m file

I am trying to import a list of directories from a file during initialization. I wrote a package that defines a function to import the file. When I test the function in a notebook or execute the ...
1
vote
1answer
287 views

How to scrape image search engines?

I'd like to download highest resolution images possible from the search results like these: ...
3
votes
3answers
105 views

Why does Import[#, “ImageLinks”]& fail?

I'm having difficulty with Importing urls embedded in a site (with and without pagination). This command: ...
0
votes
0answers
57 views

Automatic import of Maple expressions into Mathematica using MathML

I'm would like to automate a process so as to convert Maple expression into Mathematica expression. For the moment, thanks to the function ...
2
votes
1answer
59 views

Import tabular text data

I have a text file created with a bash script I wanted to read the data avoiding the first line. I have written few dirty codes, but I wondered if anybody can do it in fewest possible nice one ...
8
votes
1answer
268 views

Import converter that can import, split, and compress files?

I'm working with a data format that prescribes separate header and data files, so for instance "file.hdr" and "file.dat". They ...
2
votes
0answers
113 views

import of a opj file (Origin)

Is there a way to import a file of opj-type? Or do you know a package to convert the data? The Import[] function seems not to know this format.
2
votes
0answers
43 views

Importing binary structured C++ data file

I am trying to import a binary data file. It seems that BinaryReadList would be appropriate? However the data file is composed of c++ structures like this: ...
2
votes
2answers
206 views

Can not generate graph using smooth kernel distribution

I am a newbie to Mathematica so this question might looks silly. I want to generate a smooth kernel distribution graph for this set of data. The data I uploaded has two columns, the first column is ...
0
votes
0answers
34 views

Access interactive web forms [duplicate]

I would like to communicate with interactive web forms, e.g., get the same HTML response as if I had clicked a "select" button and then clicked a "submit" button on a web page. This is for automated ...
7
votes
1answer
129 views

Reading NIfTI-1 files

How can I read NIfTI-1 files (.nii extension) in Mathematica? Are there existing tools for this?
5
votes
4answers
254 views

Finding relevant parts in XML document

My question is about a XML document and finding parts of strings. test = Import["C:\\Users\\filename.xml", "XMLObject"] This gives the following output: ...
5
votes
1answer
125 views

How to analyze all the data in a directory

I am trying to import, analyze, and save all the .txt files in a specific directory. I can do this with a single .txt file using the following code: ...
13
votes
1answer
399 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 ...
4
votes
1answer
261 views

mathematica use too much memory to Import large dat file

Err... When I try to Import a .dat file by dat = Import["D:\\TIEGCM\\solar_input\\omni_m_all_years.dat", "Table"]; or ...
4
votes
1answer
187 views

Problem exporting and re-importing STL file

I wrote all code and there're no errors in code. Result of code is like first picture(left). But I can't Import that structure. The result of import stl file is second one(right one). How can I import ...
1
vote
0answers
62 views

Create set of data from vector curve [closed]

I need exactly what is written in the title. Suppose we have some curve plotted: p = Plot[Sin[x],{x,0,2pi}] now we save that as vector graphics: ...
0
votes
1answer
69 views

Constructing a grid of individual plots for data imported from a list of files [closed]

I have to plot 6 data plots (ListPlot) in a GraphicsGrid from 6 different files (each data file has four columns of which the ...
7
votes
1answer
278 views

How to make Import recognize a new file extension?

I've written an import converter for a custom file format, and it all seems to be working as expected, except for the fallback behavior with no arguments: ...
2
votes
0answers
49 views

Error importing MBOX file

I am trying to import the mbox file generated by gmail. Using the Import command. ...
1
vote
1answer
131 views

Strange behavior: Cannot import data as MP3 format anymore

I am having the strangest problem since a day: Mathematica is no longer (after a reinstall) able to import MP3 files. I think these details should not be relevant, but they are all there are: It ...
1
vote
0answers
63 views

Why is BinaryReadList faster than BinaryRead? [closed]

I work on a package for Mathematica which reads some binary data from a file. I use BinaryRead to read data from the file, but it looks like ...
8
votes
1answer
176 views

Reading a HDF file im Mathematica

Bug introduced in 8.0 or earlier and persisting though 10.2 On OS X, the problem is present in 9.0 but not in 10.0, 10.1 or 10.2. I am trying to read a HDF file in Mathematica 9 on OS X and get ...
0
votes
0answers
63 views

Getting Boston Marathon Data [duplicate]

I am trying to use Mathematica to analyze the data given by the Boston Marathon concerning running time, etc. The website http://registration.baa.org/2015/cf/Public/iframe_ResultsSearch.cfm gives a ...
3
votes
0answers
117 views

Importing large number of frames form Video - improved method?

I am trying to work with large numbers of frames from a video (30000+). I see there are a number of answers out there, but I find none of them satisfying - see below for details. I understand from ...
1
vote
1answer
73 views

Performance of Extract-Transform operations

I'm doing simple data analysis, where I load some "date-time" data from a file. The data is a simple list, but there are 41,000 values in total. Here's a short sample: ...
3
votes
1answer
100 views

How to import several files at once?

I tried to import multiple files at once. Following this topic my code is ...
25
votes
3answers
2k views

Finding a function that fits the shape of an image

How can I find a function that fits the given shape of an image? Or instead extract a point set from the shape and then find an interpolating function fits the shape. An example image is attached.
1
vote
2answers
136 views

Doing same operation on multiple files

Is there a way in mathematica to do same operation on multiple files at once? And preferably have the output in a table or list form? I want to do the following operation preferably in few non-labor ...
2
votes
0answers
79 views

Is there a way to specify which kernel is used to import files (SOLVED)?

Following up on a previous question in which I encountered a memory leak in the JSON importer I have created a SandBox script that will run the Import and analysis on a separate kernel, which be ...
7
votes
2answers
110 views

Why doesn't Import work with XOWA offline Wikipedia database?

I'm having trouble with importing HTML from XOWA offline wikipedia database. I set up a local server for datamining, but I can't access it with Mathematica. I can request a HTML page with ...
13
votes
4answers
406 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 ...
2
votes
0answers
63 views

I can SystemOpen but I can't Import an online file (Internet and Intranet)

Thank you MarcoB and Pickett. I am currently using the Mathematica trial version on my laptop since my company's enterprise version will take 2 more weeks to setup because there are a lot of hoops to ...
1
vote
0answers
76 views

Importing SQL view vs table

I am trying to import a SQL view not a table in Mathematica. The command: SQLSelect[conn, "DataByYear"] This will correctly bring in the table. However using the ...
3
votes
1answer
97 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, ...
9
votes
1answer
561 views

Mathematica 10 doesn't support path containing Chinese characters

Bug introduced in 10.0 and fixed in 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 into ...
3
votes
0answers
69 views

Importing sobj sage objects?

I am working with a sage-math object. With some older versions of Mathematica it was possible to send data directly but the function doesn't work with Mathematica 9. What are my options to import a ...
1
vote
1answer
59 views

Using Get function to return a specific expression

I am trying to use Getto import data saved as a .nb document. The problem is Getevaluates all expressions but only returns the ...
4
votes
2answers
131 views

Reading from a file: complex number with small imaginary part

I'm trying to read a matrix from the next file: 1+1e-18i 24 42 23.43e-23i using u=Import["file.dat","Table"]; and then find, ...
6
votes
2answers
138 views

Possible memory leak when importing JSON

Bug introduced in 10.0 and persisting though 10.2.0 This problem that I would like to resolve is how to free memory used Import a file when the file is no longer in use. I have a project in which ...
2
votes
2answers
217 views

Import a column of data, make a matrix from it and export it WITHOUT curly braces

I'm new here and with Mathematica, too. I want Mathematica to import data from a txt file (it has one column of data). These entries are z-values. From this I want to make a matrix - 508 entries make ...