Questions about getting data, files, images etc. from various formats into a form that can be read, tranformed and manipulated by Mathematica
0
votes
1answer
28 views
Import variables from excel
I have an excel file I am trying to import into Mathematica. It is in the format of variables names in the first row of each column and then the data underneath. One of the columns specifies ...
4
votes
1answer
75 views
Importing Data with Line feeds
I am trying to import data from a CSV file into Mathematica that contains line feeds in certain elements that I wish to be properly rendered in Mathematica. I suppose this has something to do with the ...
13
votes
2answers
133 views
Problem importing URL with Greek characters
I'm considering buying a car. So I thought why not make a web-crawler in Mathematica to pile-up car data? Brilliant idea.
Then I found this Greek website, gocar.gr, which just so happens to have all ...
1
vote
1answer
59 views
Making a ListVectorPlot3D from data in an external file
I have a .dat file with six columns: {x y z vx vy vz}, where x, y, z are space coordinates and vx, vy, vz are the vector components.
How can I use this file to get ...
0
votes
1answer
52 views
Problem with importing format of data from Excel?
I am trying to import data from Excel. It is located in a single column of the Excel file but each cell contains a comma separated pair of two values as a,b. When I am importing them I have this ...
3
votes
2answers
88 views
how to convert string output into executable commands
temp = (layer = #;
layerS = ToString[#];
StringForm["Import[\"drainCdg_gdat0``\",\"Table\"]",
layerS]) & /@ {1, 2, 3}
how to get the output of ...
2
votes
3answers
180 views
Import specific data from Excel to make a plot
I need some help with this: I have imported data from an Excel file and I need to make a contour plot of it. The data are in table-like form. Here is a sample of the first few 'rows':
...
5
votes
1answer
107 views
How to import non-text data from std input in a Mathematica script?
Or maybe a better question is - how can I get a stdin stream? I need to run on Linux.
I did look at Reading from STDIN, or: how to pipe data into Mathematica, but ...
0
votes
0answers
77 views
Behavior of copy and paste with different image formats
Ok, let's say I create a 1x1 pixel image.
i = Image[{{0}}, "Byte"];
Now I Export["image.png", i] the image and import it into ...
0
votes
0answers
33 views
Import and file symbolic links
Can Import be forced to follow a file symbolic link (a.k.a. alias (Mac) or shortcut (Windows)) to the true file?
6
votes
3answers
140 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.
...
2
votes
0answers
62 views
Exporting Specific Cells of Many Workbooks into One using Mathematica
I currently have a large number of detailed files from which I would like to extract certain cells' information to make an Archive spreadsheet.
There are approximately 9 parameters of each ...
2
votes
2answers
78 views
Importing LTSpice data into mathematica
I am working with LTSpice (Discret electrical circuit ( Spice) simulator). I would like to import LTSpice ouput data into mathematica for processing and plots.
An example of a file can be found here ...
7
votes
2answers
97 views
How to show wireframes on imported Object / Mesh (.obj file)
I've managed to import a Wavefront (.obj) file and store it in a variable like so:
...
2
votes
2answers
184 views
How can I import images from a Microsoft SQLServer database?
I have a table with binary data (images) in Microsoft SQlServer. I want to import that data and convert it into Image format. I wrote the following code, but it's ...
5
votes
1answer
67 views
Importing images from the web using ImportString & URLFetch
I can bring images from the web using the Import command like this:
Import["http://blog.wolfram.com/wp-content/uploads/2008/06/se-30.jpg"]
Sometimes the web ...
2
votes
4answers
212 views
Importing or reading data in binary format 212
I have a binary data file in format 212, and I want to import the file into Mathematica. How do I read or import binary format 212? I almost have no direct experience of working with any binary ...
0
votes
0answers
45 views
location of csv file when importing [closed]
I am trying to import csv file to mathmematica.
However, when I tried to import, Mathematica was not able to find the file (see below).
Do I have to move the csv file to the specific position?
...
0
votes
2answers
89 views
Import matrices side-by-side separated by TAB
The problem is 0(TAB)0 interpreted falsely as a dark red square although it should be a dark red square surrounded by zeroes/ones. Import has different data-formats ...
2
votes
1answer
76 views
ReadList importing negative times
This is probably an easy question to answer, but I need a fresh eye... I'm struggling with processing the following file (extract shown here) It's a list of dates, and positive/negative time durations ...
0
votes
0answers
47 views
How to monitor the progress of Importing files? [duplicate]
I want now,how much of percentage was imported,while importing any file.
How can I solve this?
Can anyone help me?
Thank you.
0
votes
2answers
117 views
Import large amount of data with time stamps
I have a large data file (150 000 lines) which I want to import in Mathematica. The first few lines look like this
...
2
votes
0answers
59 views
Significant platform-dependent efficiency when importing data?
I'm curious, as I understand that answer this way:
If you are using a Linux derivative or something like cygwin on
Windows, then this is an efficient solution for reading only the third
field ...
2
votes
2answers
122 views
Importing several huge files with headers & footers
having here several files in ASCII format
http://ge.tt/91rv0Jf/v/0
I want to import, while removing headers and footers and then join the several lists.
...
0
votes
1answer
64 views
Error messages in importing data file
I want to copy the data in a public file (link in code below) and put each row of the data as a sub-list, i.e., in the format
...
12
votes
3answers
179 views
How to Import random elements of huge data files
I am calculating huge data files with an external program. I would like then to import the data into Mathematica for analysis. The files are 2 columns and up to many millions of rows.
So for ...
0
votes
1answer
74 views
3D plot in Mathematica [closed]
I have data in my file format .dat. The data generated using 'C' program. This data file having 3 columns. How can I import this file using Mathematica? Is is possible to plot using ListDensityPlot() ...
0
votes
2answers
96 views
Convert *.txt file
I would like to Import and Convert a *.txt file which looks like:
https://docs.google.com/file/d/0Bw-308nJcF01Yl92RURCLUg4VzQ/edit?usp=sharing
and turn it into a Matrix which I can use to make ...
1
vote
1answer
82 views
How to make the plot from geotiff format
I have a "GeoTIFF" format map, and I have imported it into Mathematica, then I used the Graphics to plot a point on the map. ...
2
votes
1answer
62 views
Using NetLink to Import Excel File
I can import an Excel file into Mathematica easily:
But when I try from .Net it fails:
These are the commands and errors I am getting:
...
0
votes
1answer
57 views
How to import sound file from computer? [duplicate]
I know you can import sounds/images from the Mathematica library, but I was wondering if I could import sounds I have on my computer (i.e. .wav files)? I've tried using the Import functon and properly ...
0
votes
0answers
90 views
Determining if a point is inside or outside a 3DS (.3ds) or 3DS MAX (.max) object?
Imagine I import some 3DS (i.e. 3D studio) file (http://reference.wolfram.com/mathematica/ref/format/3DS.html) or a 3DS MAX file. How could I place this model (say, the 747.3ds file in the ...
2
votes
1answer
80 views
diff-able text-only notebooks?
I would like to save my Mathematica notebooks as plain-text documents, so that I can keep them under git version control.
I thought that ...
0
votes
0answers
28 views
Exporting large expression [duplicate]
I generated a huge mathematical expression (~200k terms, impossible to simplify yet) and want to save it for later analysis. Last time I did Export to *.nb file and ...
5
votes
2answers
87 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 ...
2
votes
5answers
122 views
Creating ordered triplets from an Excel sheet
I have an Excel sheet of the form:
" " a b c
1 R S T
2 U V W
3 X Y Z
Where every entry is a number (except the blank quotes, ...
1
vote
3answers
78 views
problem with Importing multiple files
I need to import about 100000 "dat" files to my progrom. I want to do this using the last answer to this question:
Importing multiple files using a for-loop
I know that I should define a list of all ...
7
votes
3answers
131 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
...
0
votes
0answers
44 views
The “Source” format of Import[], where's that from? [closed]
In my attempt to import an article from The NY Times, I found it's not working. So I did some searching, and in this thread the OP was in some similar situation.
It seems that the NYT's website is ...
7
votes
1answer
108 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
1answer
107 views
Get both output and return code of external program
Run["program"] will run an external program and return the return code.
Import["!program", "String"] will run the program and ...
1
vote
3answers
162 views
Importing multiple files using a for-loop
once again I am stuck solving a seemingly easy problem :(
I would like to make a List of tables by importing data from several txt-Files.
Importing the data into a table works so far and I am able to ...
2
votes
4answers
202 views
Plotting a large number of data points
I would like to know how to plot when I have a large number of points (arround 600) in a specific format:
...
3
votes
1answer
59 views
Reading RData files without RLink
I am using Mathematica 8. I would like to read some RData files which I have received. I do not currently have an installation of R on the machine with Mathematica.
1
vote
1answer
85 views
Automating sequential import of data from web
I am trying to import data from multiple web pages hosted by a single online source. The data is posted by the source as one data set per web page for each week of the year. I would like to import the ...
4
votes
2answers
113 views
Image Rotation, Line Symmetry
I'd like to import an image, superimpose it, reduce the opacity of the overlaid image, and then use a manipulate to rotate the top image to illustrate rotational symmetry.
The image below is using ...
2
votes
1answer
142 views
Beginner question. How do I read a CSV file and remove comments from it
I have very recently started using Mathematica 9.0 Home Edition and am trying to understand it as best I can so please be tolerant ;). I have a file of data (sugar.csv) which contains blood sugar ...
3
votes
2answers
274 views
Check Google PageRank for a given URL
Does anyone know how to write a Mathematica function that returns the Google PageRank of a given URL?
I found a tutorial for achieving this in a bash script here, but I have no idea how to port this ...
2
votes
1answer
46 views
Avoiding re-evaluation of RegionPlot3D on a second computer
After running a RegionPlot3D named "testplot" on my desktop, I followed an earlier suggestion from the forum and saved it using:
...
-4
votes
1answer
76 views
Exporting data from different notebooks to a common file
I am doing some calculations from different notebooks. I need to export the results from all those notebooks in columns of the same file, like
a1 b1 c1
a2 b2 c2
a3 b3 c3
. . .
where a, b ...
