Questions about getting data, files, images etc. from various formats into a form that can be read, tranformed and manipulated by Mathematica
4
votes
1answer
71 views
Is it possible to Import urls not type “”
These days I often copy urls from explorer's address.
When paste the url into Mathematica Cell, it is neither a string nor a expression.
Import@http://mathematica.stackexchange.com/search?q=load+file
...
1
vote
0answers
50 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
67 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
81 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
161 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
61 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
192 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
38 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
84 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
74 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
44 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
111 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
...
1
vote
0answers
54 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
103 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
51 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
169 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
67 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
94 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
72 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
55 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
54 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
80 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
79 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
1answer
67 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
110 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
69 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 ...
5
votes
3answers
113 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
42 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
100 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
98 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
122 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
180 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
56 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
80 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
104 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
129 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
266 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
71 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 ...
1
vote
1answer
81 views
Importing a matrix from a text file
I have a $4 \times N$ matrix in a .txt file of the form:
-17.071 137.567 16.554 0.65
-16.873 136.138 16.934 0.7
-15.397 135.738 16.894 0.7
-14.7 135.982 15.9 0.6
...
1
vote
0answers
102 views
Transferring a list from one notebook to another
I have Mathematica code split into two notebooks. The first part is supposed to run and output a list of numbers into a text file, using Export. The second part ...
0
votes
1answer
101 views
Read a file into a list of vectors [closed]
I have file structured as (Axis 1) (Axis 2) Data.
As an example:
...
4
votes
1answer
64 views
How to prevent output truncation when importing large Graphics?
The Evaluation Preferences in Mathematica specify a maximum output size of 1048576 Bytes before truncation occurs. That makes a ...
8
votes
1answer
164 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 ...
2
votes
2answers
153 views
3D scatter plot from a txt file
I have a txt file with space-delimited x, y, z coordinates of several points. The points are organized into groups of unequal size; the groups are delimited by skipping a line, like this:
...
3
votes
2answers
118 views
Extracting a single layer from a SHP file
I have an ESRI ShapeFile (SHP) that I've loaded. It has a number of layers which I can see the names of by using:
Import["file.shp", "LayerNames"]
I get ...
2
votes
1answer
106 views
How to export/import function values [duplicate]
I have a function with two variables:
f[x_,y_]:=f[x,y] = ...
I calculated some values (they are fractions like 435345345/3424242424) and would like to store the ...
2
votes
1answer
198 views
Importing data sets from plain-text files and performing operations on them
I am working with a lot of daily weather files in the txt format. I need to calculate a daily quantity from each of them, e.g., daily light intensity, which ...
2
votes
1answer
145 views
Read and filter a text file without importing
I have a large text file of a million sections. Each section contains A lines of header and B lines of numeric data.
I want to read the first and last line of B from each section (to have a list of 2 ...
