[R] Read fst files

[Jeff Newmiller]

... but if you are receiving multiple-file zips then you should not be using unz() the way you are in your original post.

I have to agree with other responders suggesting that you handle unzipping fst zips manually rather than as part of an R one-liner.

On June 9, 2021 11:26:34 AM PDT, Jeff Reichman <reichmanj using sbcglobal.net> wrote:
>Jan
>
>Makes sense. Its just that I often receive  large zip files that
>contain a variety of file types.
>
>Jef
>
>-----Original Message-----
>From: R-help <r-help-bounces using r-project.org> On Behalf Of Jan van der
>Laan
>Sent: Wednesday, June 9, 2021 12:56 PM
>To: r-help using r-project.org
>Subject: Re: [R] Read fst files
>
>
>
>read_fst is from the package fst. The fileformat fst uses is a binary 
>format designed to be fast readable. It is a column  oriented format
>and 
>compressed. So, to be able to work fst needs access to the file itself 
>and wont accept a file connection as functions like read.table an 
>variants accept.
>
>Also, because it is a binary compressed format using a compression 
>method that is fast to read, compressing also to zip seems to defeat
>the 
>purpose of fst.
>
>HTH,
>Jan
>
>
>On 09-06-2021 15:28, Duncan Murdoch wrote:
>> On 09/06/2021 9:12 a.m., Jeff Reichman wrote:
>>> Duncan
>>>
>>> Yea that will work. It appears to be related to setting my working 
>>> dir, for what ever reason neither seem to work
>>> (1) knitr::opts_knit$set(root.dir 
>>> ="~/My_Reference_Library/Regression") # from R Notebook or
>>> (2) 
>>> setwd("C:/Users/reichmaj/Documents/My_Reference_Library/Regression")
># 
>>> from R chunk
>>>
>>> So it appears I can either (as you suggested) use two steps or
>combine 
>>> but I need to enter the full path. Why other file types don't seem
>to 
>>> need the full path ....?????
>> 
>> You need to read the documentation for read_fst() to find what it
>needs. 
>>   If it doesn't explain this, then you should report the issue to its
>
>> author.
>> 
>>>
>>> myObject <- 
>>>
>read_fst(unz("C:/Users/reichmaj/Documents/My_Reference_Library/Regression/Datasest.zip",
>
>>> filename = "myFile.fst"))
>>>
>>> Thank you. I guess just one of those R things
>> 
>> No, it's a read_fst() thing.
>> 
>> Duncan Murdoch
>> 
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>
>______________________________________________
>R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
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>and provide commented, minimal, self-contained, reproducible code.
>
>______________________________________________
>R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
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>PLEASE do read the posting guide
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>and provide commented, minimal, self-contained, reproducible code.

-- 
Sent from my phone. Please excuse my brevity.