Linked Questions

Working with big files, I have to convert some numbers that are in string format into real MMA numbers. I know that I can use ToExpression but it's slow when ...

ToExpresssion doesn't understand real numbers of the form "1.34e5". How do I convert the string ...

I have 101 files each with a lot of data. from C output. (.out files) I have imported them to Mathematica 9. However, Mathematica reads the data from each file as an element of a table. So I used ...

I have a file that defines an array of numbers like this: freq["AQs"] = 8.846947803007962E-4 ... I am reading the file with ...

Consider a number number = 2.*10^20 It is in the representation of ScientificForm. I convert it to C-form: ...

I consider myself a pretty good Mathematica programmer, but I'm always looking out for ways to either improve my way of doing things in Mathematica, or to see if there's something nifty that I haven't ...

There have already been some questions about some undocumented functionality in Mathematica. Such as (please add to these lists!) How can one find undocumented options or option values in Mathematica?...

Mathematica has a lot of undocumented or poorly documented options. How does one go about working out if there is an undocumented option that might solve a particular problem? How does one work out ...

I want to extract the number from an alphanumeric string. This is what I tried: StringTake["thiru3", {6, 6}] The result I got is ...

I got the following problem I don't know how to solve or if it's at all possible to solve(I'm quite new to Mathematica and don't have an IT background, so please explain slowly if possible:)) I'm ...

I have files that look like this: ...

With a text file with entries formatted as (output from C++): f[38.67] = -2.5387862698183892298317350539374412777263289550697e-05; ⋮ Is there a way to read this ...

I believe Internal`StringToDouble was the only way to fast convert string into numbers. Now in V12.3 it was removed: Internal`StringToDouble["1"] ...

The new Interpreter functionality in version 10 looks like it has the potential to make parsing custom data formats very easy. I'm trying to create a CSV parser. ...

I have some data with 19000 sublists such as : {" 7.9080000e+01 1.9283193e+04"} Where the first number is the value for variable ...