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In my project I developed algorithms with R and R studio to process big images from microscopy analysis. I work on big matrix of pixel value (around 3Gb ), extract biological informations from specific regions of these images especially perform particle detection at specific position of the matrix and then perform statistical analysis.

To be able to transfer the whole process to other people without applying multiple scripts functions... I tried to create a Shiny App but I struggle to import the big images .txt

Actually I use as.matrix(read.table()) function on the file provided by the shiny app user through the file input box Is any one has an idea to import these matrix easily and more quickly ? even on Rstudio I wait ~20minutes for each picture import.

Thanks a lot in advance for the answers,

Best,

Romain

  • This question has been answered in this topic : https://stackoverflow.com/questions/1727772/quickly-reading-very-large-tables-as-dataframes –  Jun 21 '18 at 06:45
  • Possible duplicate of [Quickly reading very large tables as dataframes](https://stackoverflow.com/questions/1727772/quickly-reading-very-large-tables-as-dataframes) –  Jun 21 '18 at 06:46
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    Thanks for your answer, I'll try solutions advised in this topic, and I'll try to apply them in my shiny project – Romain Guyon Jun 26 '18 at 12:38

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