Questions tagged [import]
Questions about getting data, files, images etc. from various formats into a form that can be read, tranformed and manipulated by Mathematica
1,390
questions
-1
votes
0answers
47 views
Speeding up the process of importing a large ASCII textfile [closed]
I have a large plain text data file that I need to import. The file consists of two columns of numerical data separated by a tab. Now, I am using the following command
...
0
votes
0answers
32 views
Mathematica CSV values
I wanted just to add constant to each value. i. e.
data = Import["/Users/paul/Desktop/rtm1.csv", "CSV"]
And I get
...
0
votes
0answers
48 views
importing mathematica files into Github [duplicate]
I'm going to import my files in Mathematica (.nb) into my Github profile. Is there any method to do that?
Thanks
0
votes
1answer
58 views
1
vote
1answer
46 views
Problems with importing .mat data that contains NaNs
I had a .mat data that I wanted to import to Mathematica. I tried using
Import["File path","Data"]
But it didn't work. It just returned de ...
0
votes
0answers
15 views
Curved text layout with UnderoverscriptBox support
There are a few questions related to laying out strings of text along curves, Text along a lemniscate curve, How can I wrap text around a circle? and others.
See the GIST.
Most answers either layout ...
13
votes
1answer
265 views
Easily download SE posts as notebooks?
Is there a common method of grabbing an SE post or answer here as a formatted notebook so that you can immediately run it, instead of copy-pasting the code blocks?
I've heard SSE uses MarkdownSharp ...
1
vote
0answers
81 views
Import matlab MAT-format fails
As I did many times before, after updating Mathematica v12.2 I have problem to import matlab *.mat file:
I checked
...
2
votes
1answer
77 views
Some problems importing *.hdf5 files in MA12.2
I'm attempting to Import datasets from a *.hdf5 file into Mathematica 12.2 in Win 7.
After looking at the syntax in the Wolfram Documentation Center and displaying the StructureGraph, I had no problem ...
-2
votes
2answers
58 views
Import data from a formatted text file into a dataset
As you can see from the picture, it's a txt. file, and when I use Import, lot's of different type of data stored in one column, I want to devide them into different columns. For example: the 1st ...
4
votes
2answers
127 views
ImportMesh complains the element mesh has insufficient quality of 0
I'm using ImportMesh in FEMAddOns package. When I imported the following mesh created in Abaqus
the following warning occurred:
ToElementMesh::femimq: The element ...
0
votes
2answers
39 views
Exporting a file into a subdirectory of notebook
How can I create a directory in a notebook directory and export a file (resulted from that notebook) to created subdirectory?
1
vote
0answers
45 views
How to import a google sheets file that requires account login?
How do I import a google sheets file that is in my google drive?
I tried the following:
...
1
vote
1answer
97 views
Importing PDF with Mathematica 12.2 on Windows skips newlines
I'm using Windows 10 with MM12.2
PDF import does not include the standalone newlines anymore.
This is a very annoying issue since we would like to extract paragraphs which is now not possible.
We ...
3
votes
1answer
36 views
Prevent ImportString from rounding values
I'm trying to import a table from Excel following this question and answers. In doing so, strings are kept as strings though numeric values get interpreted as Real ...
0
votes
0answers
30 views
How to give Classify a list of files on disk instead of importing them all at once?
I am trying to use Classify to train an image classifier on a dataset of 30k+ images. I followed this tutorial and created a list of the form {File[…]->class,…}. I can use NetTrain with this list, ...
0
votes
0answers
43 views
Import a huge stack of TIF failed in Windows, but successful in MacOS
I have a 16-bit stack of images (428 x 684 pixels) in TIF format. The stack has 20,000 images, about ~780MB. When I import it to Mathematica in MacOS (i7, 16GB RAM, BigSur), it successfully imports ...
0
votes
0answers
55 views
Error importing video
When I try and import a video:
Import["video.avi", {"Frames", {50, 60, 70}}]
Or using the original .mp4 codec, which I converted using VLC, ...
1
vote
1answer
50 views
How to use 'Join' and '& /@' : combining all .csv files in a directory into a single .csv file automatically
I would like to import all .csv files in a directory and combine them into a single file using Join. I can do this manually but when I try to automate it using <...
2
votes
3answers
100 views
1
vote
1answer
30 views
Import of csv-data don't read columns
I couldn't catch the point:
when I try to read an easy csv-dataset with ";" as delimiter, I get only "strings" instead of a set of columns.
Here are two lines of the csv-File:
k_id;...
2
votes
1answer
89 views
Formatting Imported Complex Arrays from Python (csv. files)
Just a short question, I am trying to import a complex array (matrix) from Python to Mathematica by first writing to a csv. file. When I Import the csv. array to Mathematica it is in a form (matrix ...
0
votes
1answer
33 views
Import multiple sheets from one excel file to one datasheet
This is probably quite a simple question for you guys but I've just started M and I've been mulling this problem for a few days and I think I am well and truly stuck. So any help would be greatly ...
1
vote
1answer
48 views
How to distinguish NumberPoint and FieldSeparators with comma
Hello,
I have a problem with importing .txt file which uses "," as decimal as well as field operator.
I need to convert numbers with decimal comma to decimal point and create field operator ...
1
vote
1answer
48 views
Import a file that is located in one of three directories?
Import a file that could be in one of three directories
I want to import a file called image.png. I know it is either in dir1, <...
3
votes
1answer
68 views
Plot Excel data From Different Sheets
I have sheets 100A-100G in Excel with data I want to plot in columns E and H of every sheet. Is there a way I can take the data from each sheet and plot into a separate graph in a simple way through ...
1
vote
1answer
52 views
Incomplete data transfer: large CSV data Import, computation outputs exported as MX, then import the MX data [closed]
I have a very large CSV data file, which I imported it to my active Notebook:
...
1
vote
1answer
102 views
How to import the MS Word document content and typesetting?
I have a vocabulary with phonetics here(the extracted password is: 1234). I import these contents by saving the docx file as an <...
1
vote
0answers
52 views
How to let Mathematica evaluate a large amount of data
I have the following code in mathematica which runs perfectly for a small matrix of 21 x 12 matrix. But I really want to test it for a large system. My data is 35844 x 21000 elements, totaling 1.5 GB. ...
1
vote
2answers
66 views
Import all files in folder, perform operation, re-export with appended file name
I'm trying to write a short program that does the following over and over again.
Import all files in a folder
Automatically generate names for the imported files based on source file name.
Perform a ...
0
votes
1answer
74 views
Import CSV data from internet to mathematica [closed]
This Link has data in CSV format for 2015 and other years. I would like to get the data for 2015 (by clicking on 2015) but the CSV data format has more rows than Excel can handle and therefore the ...
2
votes
1answer
108 views
Is it possible to convert a matrix in $\LaTeX$ format to Mathematica input? [duplicate]
Is it possible to do this already in version 11.3? For example, I want to draw a graph
...
1
vote
1answer
47 views
Import 4 data columns and drop one of them [closed]
I would like to import 4 columns of data from a Dat-file(Fortran) and then drop the fourth one to use ListPlot3D and repeat this to drop the third one. When I used
...
5
votes
1answer
146 views
Import ZIP file options broken in Mathematica 12.2.0
I am trying to read a zipped table, which has its entries separated by colons. In Mathematica 12.1.1 (and earlier) this worked well with the following command:
...
0
votes
2answers
58 views
Convert GiNaC harmonic polylogarithms to HPL packages' notation in Mathematica
A general output from GiNaC (https://www.ginac.de/) of harmonic polylogarithms is H(a,b,c...,x). We want to convert it to Mathematica format (https://www.physik....
3
votes
1answer
71 views
Remove errors from sublists after Excel import
I have a very long list such as:
https://pastebin.com/9vYDLsVp
At the end of each sublist for some reason I have {,-6}. How can I remove that from each sublist of ...
3
votes
3answers
240 views
Plotting datapoints found in data given in a .txt file
Well, my question is the following: I have a .txt file that consists of the following data:
...
4
votes
3answers
182 views
How to run a whole mathematica notebook within a for loop?
I have some data sets labelled data1.dat, data2.dat, and so on, and I have written a notebook which will import a single ...
2
votes
3answers
89 views
ListPlot3D from Data Fortran file
My .dat file (Fortran) consists of data (x y u) as three columns and I would like to plot the variable "u" against the variables "x" and "y&...
1
vote
1answer
47 views
Correcting delimiter definitions in .csv files
I have a number of .csv files that have a semicolon (;) delimiter rather than comma, and I'm wondering if there is a simple way to change the text in them all.
Lets say I have a test file "a.csv&...
3
votes
2answers
118 views
Creating Maps from Shape Files for “Mixed” Labeled Data
Following suggestions from an extremely useful and informative solution to a
previous question regarding shape files (Extracting a single layer from a SHP file)
by ssch, I have been able to create two ...
0
votes
2answers
53 views
Finding the number of unique solutions in a .txt file
Well, my question is the following: I have a .txt file that consists of the following data:
...
1
vote
0answers
64 views
A glitch with importing a list of lists of polynomials [closed]
Would anybody know how to import a list of lists of polynomials which I exported earlier?
...
6
votes
1answer
220 views
Create a voxelized mesh from an STL mesh file
I would like to create a cubic or 3d grid mesh with a constant size for a surface mesh that represents a hollow torus saved in an STL file. mesh
I am import the vertex using:
...
1
vote
0answers
51 views
Export and Import trained neural net
I have trained a neural network and would like to save it to disk. I am using Wolfram version 12.1.1.0 on Windows (64-bit). I have entered the following commands:
...
0
votes
1answer
88 views
Issue Installing Knot Theory
I have been trying to install the Knot Theory package from the knot atlas, but have been unsuccessful. Firstly I tried the command
<< KnotTheory`
but ...
0
votes
0answers
82 views
Import FTP file from ftp server with FTP over TLS (Explicit)
I would like to be able to import/read a file into Mathematica from an ftp server that requires explicit TSL security with anonymous connection.
...
1
vote
2answers
66 views
How to import a (large) .CSV file maintaining its shape (defined by curly brackets)
I'm working on large tables generated with Mathematica, evaluated on different computers. I plan on join the tables on my computer and proceed with the interpolation of the data there contained.
The ...
1
vote
0answers
73 views
Parsing raw pixel data as a Wolfram Image
Context. I have a C++ function which receives pixel data (along with width, height, ...
0
votes
1answer
81 views
Strange behavior of Show with picture + points
I have a square image of 1000 x 1000 pixels, and I want to generate a collection of points inside the image. Knowing that the image is a square, I thought of simply generating points in the domain {0,...
