MATLAB Answers

Reading high precision data into vpa variables

3 views (last 30 days)
Avik Sarkar
Avik Sarkar on 31 Jul 2020
Answered: Raunak Gupta on 13 Nov 2020
I am trying to read data with 60 digits of precision. If I use importdata, it is imported as double data type and I am losing precision. The documentation on vpa does not really help on importing data. Is it possible to read data and store them in arbitrary precision variables? Thank you,

  1 Comment

Stephen Cobeldick
Stephen Cobeldick on 31 Jul 2020
Import as character and convert once in MATLAB memory.

Sign in to comment.

Answers (1)

Raunak Gupta
Raunak Gupta on 13 Nov 2020
Hi,
As Stephen mentioned importing as double will always loose the precision because of the amount of precision is less in double. You can import the numeric values as character array. Note that even after that you can only store the values in a symbolic variable as mentioned here to not loose precision. From the character array you can convert it to cell array using cellstr and the cell array can be converted to a symbolic variable using cell2sym. This will all enable to do actual calculation on data rather than only a way to represent it.
This answer also provide some nice insights about your query.

  0 Comments

Sign in to comment.

Products


Release

R2019b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!