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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1
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1answer
85 views

Retrieve XML Tree with only specific XMLElements

I would like to retrieve the XML Tree of a XMLObject with only specific XMLElements. In the help of Mathematica ...
4
votes
1answer
94 views

How can I import html fragments as formatted cells?

I see that there is limited support for "HTMLFragment" in Export, but I figured with all the work that went into porting Mathematica into the Wolfram Cloud there should be a way to Import ...
0
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1answer
129 views

Importing large data without using Import [closed]

I have around 240 files with lots of data, I have been using Import[] to import these data for further processing. But as my simulations are growing bigger, I am ...
1
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1answer
147 views

Import csv file which contains columns of different lengths --> How can I delete empty fields?

I have the following problem: I want to import a csv file into Mathematica. I file as a lot of rows and columns, but the column lengths differ for certain rows. 2 columns always belong together, ...
1
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2answers
154 views

How can I import a table from a Wikipedia page?

I'm trying to import this table from a wikipedia page containing the list of lunar missions into a Mathematica as an Association. Here, I'm trying to use the new ...
1
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1answer
85 views

Importing Data Issue, Breaking Up Elements

I am trying to import a comma delimited text file as a Table and I am having two issues: First, the file imports all of the numbers that should be separate columns as a single string. This is not ...
3
votes
2answers
84 views

Manipulation of .csv imported data — no blanks in either of two lists

Above is a .csv file. I am trying to construct two lists of male and female math test scores such that only districts which include info for both male and female students are included i.e. neither ...
0
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2answers
142 views

Specific excel data needed in a list

I need to create a list from a general Excel database that requires only data from "ALL STUDENTS" rows on columns 2 and 7. The List most be of the form {DISTRICT, MATH} where the MATH score is ...
1
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1answer
103 views

Importing a 3D table from excel

I have a 3D table that I'm able to plot using ListPlot3D, but when I export the table to an excel file and try to import the saved data, the format is different. The imported table seems to have ...
0
votes
1answer
114 views

How to import data from a .mat or a .txt file and manipulate dimensions

I'm new to Mathematica (I know very, very little - so I apologize if anything I say is absolutely wrong) - but I'm trying to upload a file from matlab and arrange it in matrix form. I have a .mat ...
1
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1answer
125 views

Read a compressed ascii data file?

I would like to write a filter for Import to handle data files that are generated by LabView in the LVM format. This should be straightforward, since the format is ...
3
votes
1answer
63 views

How to force Mathematica to interpret a file as HTML?

Some web pages do not explicitly contain the file extension "html" but is formatted that way (like this one). If I saved this page to my computer then Mathematica could parse it correctly. But if I ...
1
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1answer
235 views

How to scrape image search engines?

I'd like to download highest resolution images possible from the search results like these: ...
0
votes
1answer
83 views

Import mixed graph from Excel

I am new to Mathematica. I want to use the software as it allows analysis of mixed graphs (directed and undirected edges). I have my network as an Excel spreadsheet of three columns: source, target ...
0
votes
2answers
87 views

How to import website data which has an unknow format? [closed]

I want to import data from this website: http://hq.sinajs.cn/list=sh601006; It should look like ...
2
votes
1answer
88 views

Make animation with multiple external data files

I am currently solving PDEs for a discrete vector field with C++. The output at a time t is an array where each row represents a site and there are 6 columns, the first 3 give the position of the site ...
0
votes
0answers
126 views

Is it possible to import Matlab “.fig” files in Mathematica?

Is it possible to import a ".fig" file made in Matlab into Mathematica? If I try the usual Import[filename] it produces an error ...
1
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4answers
127 views

Mean duration between two specific data points

I have dataset such as: ...
0
votes
1answer
73 views

Mathematica: issues storing nested list on disk

having trouble with mathematica using nested lists. I want to save a list like this: l1={{a1,{a,b,c,d,e}},{a2,{f,g,h,i}}} So, the nested components do not have ...
5
votes
1answer
134 views

Is there a way to embed a data set in a notebook?

I have a data set (currently a table in a .csv file). I would like to share this notebook with colleagues either as a notebook, or (even better) as a CDF document. Is there a way to embed the data ...
1
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1answer
53 views

Importing files into mathematica from flashdrive

I don't know why I can't get my files to import from my flashdrive into my notebook. I have .mat files and .cvs files. I've tried this ...
0
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1answer
101 views

Import and export without changing number format

I have a complex file that is the output of a program. The file contains multiple columns with data in different number formats. For example: ...
4
votes
1answer
229 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 ...
0
votes
1answer
85 views

Union of large sets

I am trying to take union of thousands of set containing thousands of elements. However mathematica closes itself when I copy/paste the sets in Union[{}]. Do you ...
-1
votes
1answer
130 views

Function for importing and plotting data from excel spreadsheet

I know this must be a very basic question, but I could not find any answers. I need to create a function that: 1) imports data from an Excel Spreadsheet, 2) assign specific information from this xlsx ...
0
votes
0answers
117 views

Plotting stellar spectrum from FITS file

I would like to make a plot of wavelength v. relative frequency from the stellar spectrum data in a FITS file (in order to fit a curve to one of the spectral lines). I used ...
1
vote
1answer
64 views

How to import a file for processing but not for displaying? [closed]

Here's my problem, I want to take what I have now for code ...
4
votes
0answers
46 views

Import succesful when file manually deleted

apparently Import keeps an imported file i the cache and doesn't complain for some time if a file is deleted manually from the system and then it is imported. If the file is deleted from within ...
0
votes
1answer
49 views

Reading a .txt file with numbers

The .txt file is: tb_FeSe_22_12_2014.csv 0.00102786 (-0.000421863,1.58589e-09)(-4.04766e-05,2.67116e-07)(-8.4396e-06,-1.54976e-07) I would like to Import it to Mathematica such that I have: ...
9
votes
1answer
421 views

Mathematica doesn't read .mat file

Bug introduced in 6.0 and fixed in 10.2 (July 29, 2015) To be honest, I don't know if the problem is with Mathematica, or with the file; it's been generated by PicoScope, a PC-based oscilloscope ...
0
votes
1answer
66 views

ReadList and ToExpression

My dataset is like: id, feat_1, feat_2, feat_8, feat_9, feat_10, feat_11, feat_17, feat_18, feat_22, feat_2, target 1, 1, 0, 0, 0, 0, 1, 2, 0, 1, 0, Class_1 2, ...
0
votes
1answer
119 views

Import GEXF graphs into Mathematica?

Is there any smart way to import gephi graphs (*.gexf) into mathematica ? I mean other than converting to *.gml.
0
votes
1answer
128 views

Is there a better way to download images in parallel?

Is this the best way to batch save a list of image urls in parallel? ...
2
votes
1answer
153 views

Dynamic importing of json file is not refreshing

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

Cannot import Excel (xls or xlsx) files which have non-ASCII characters in the name

It seems mma9 works fine, but with mma10 it fail to load a file name with Chinese characters. I use MacBook Pro(Retina) with OSX 10.10.2, and Mathematica 10.0.0.0. I need the file name with Chinese ...
0
votes
1answer
51 views

Import command gives different solution to equation than cut & paste

I would like to import values from a text file to run a notebook. The notebook works fine when I cut and paste in all the input values manually. Here is a working version. But when I import the same ...
0
votes
1answer
79 views

Cannot import data into a notebook as a list of numbers

I have text file with a list of numbers separated by commas, which I would like import into a notebook to be called when the name ratevector is used. If I cut and ...
0
votes
1answer
66 views

Working on a certain column after importing data from a file

I'm trying to import a file with 2 columns, in TSV format. Something like this: ...
7
votes
2answers
286 views

Why an extra { when importing .xls?

I am trying to import data from a file. If I import a CVS file, I get: {{a,b,c},{e,f,g}}. For example, two curly brackets. If importing from a .xlsx file I get ...
1
vote
3answers
204 views

Read data from file starting at a certain point

I have files of data that come with a whole bunch of junk in the beginning before the actual columns of data start. Is there any way to tell Mathematica to start putting the data into a table from ...
0
votes
1answer
69 views

Getting error Import::chtype when mporting 2D array of images [closed]

Suppose I have images = {{1.jpg, 2.jpg}, {3.jpg, 4.jpg}} Now I try to import all of them at level 2, ...
9
votes
2answers
187 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 ...
24
votes
3answers
1k 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.
6
votes
1answer
89 views

Import of data from ODS

With SetDirectory["~/Downloads"]; ifile = "test.xls"; TimeConstrained[idata = Import[ifile, {"Data", 1}], 5]; I can achieve the desired result of importing the ...
1
vote
1answer
146 views

How do I utilize the dynamic input field function in the manipulate function? Can I use this functionality to import a .xls from an URL dynamically?

Im trying to get my program to import a .xls for manipulation, I need to import the .xls at an url location dynamically, I did have this at the beginning of my code: ...
6
votes
1answer
228 views

How to use Get on a folder

In the documentation for Get it says: If the file found by <<name is a directory, the Wolfram Language will try to ...
1
vote
0answers
46 views

Can I import (and repair) damaged GIS shape files?

Five GIS shape files are available online at http://www.utahcounty.gov/OnlineServices/maps/DataLayers.asp. Mathematica 10 imports 4 of the 5 files just fine (in the sense that, after download, ...
6
votes
1answer
332 views

How to correctly import data zipped with the “deflate” algorithm?

I'm writing an importer for the GIFTI file format. The details of the format are not particularly important, but the basic idea is that it is a relatively simple XML file which includes binary arrays ...
1
vote
0answers
69 views

import file from directory using sftp

I want to import a file from a directory on a ftp using sftp. I'm not sure how the command looks, but here is what I have tried (based on this older post): ...
1
vote
1answer
136 views

A bug won't let me import JSON files

I have been working on a project and I have been using JSON to build some networks, the code I use is: ...