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how to import a file into mathematica and reference a column by header name


how to import a file into mathematica and reference a column by header name

By : Brad
Date : October 28 2020, 04:55 PM
should help you out I have a TSV file with many columns like so;
code :


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How to import data from a file as list/array in Mathematica

How to import data from a file as list/array in Mathematica


By : Michael Johns
Date : March 29 2020, 07:55 AM
I wish this help you Converting Strings to Expressions is done with ToExpression. If you have a plain text file foo.txt, with the formatting as in your example, then just importing it into Mathematica with Get, i.e., << /path/to/foo.txt; will import and evaluate data in the way you want, no need for text to expression translations.
How to import Objective-C file to bridging header if it contains an import of Project-Swift.h

How to import Objective-C file to bridging header if it contains an import of Project-Swift.h


By : Matt
Date : March 29 2020, 07:55 AM
help you fix your problem This can be solved by including the Project-Swift.h header in the implementation .m file instead of the header file, and by using forward declarations in the header, e.g. @class SomeClass, @protocol SomeProtocol.
The solution is identical to the Objective-C solution when you have two classes depending one to each-other.
code :
#import "Project-Swift.h"

@interface MyObjcClass: NSObject

@property SomeSwiftClass *aProperty;
@property id<SomeSwiftProtocol> delegate;
#import "MyObjClass.h"

@implementation MyObjcClass
...
@class SomeSwiftClass;
@protocol SomeSwiftProtocol;

@interface MyObjcClass: NSObject

@property SomeSwiftClass *aProperty;
@property id<SomeSwiftProtocol> delegate;

@end
#import "Project-Swift.h"
#import "MyObjClass.h"

@implementation MyObjcClass
...
MATLAB: To import txt file and to remove every header after n-row then keeping the first column only

MATLAB: To import txt file and to remove every header after n-row then keeping the first column only


By : dida
Date : March 29 2020, 07:55 AM
I wish this helpful for you you can use regexp to match the line. if it agrees with some match you handle it, otherwise you moveon.
code :
fileID = fopen('GRONINGEN.vars.txt','r');
l = getl(fileID)
while ~isnumeric(l)
     if length(regexp(l,'[^\d.]'))==4
         %we have 5 numbers in the line, so we store it
     end
     l = getl(fileID)
end
How do I import a .dat file as a matrix in Mathematica?

How do I import a .dat file as a matrix in Mathematica?


By : Irada Dawe
Date : March 29 2020, 07:55 AM
wish helps you I have a .dat file consisting of a string of numbers 1 to 9 that looks like this: , I suggest:
Import csv file column with no header

Import csv file column with no header


By : Bas
Date : March 29 2020, 07:55 AM
wish helps you Your CSV is malformed. If you are going to have a comma within a field that field needs to be enclosed in quotes.
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