[R] Gantt Chart Using Plotrix

[bbb_@@@ m@iii@g oii verizo@@@et]

>From the help file for plotrix:
"  ... x - a list of task labels, start/end times and task priorities as returned by get.gantt.info ..."

So I try to create an object that will contain this information.

abc <- read.csv("gntr1a.csv")

# The above csv file was generated from MS .xlsx file containing the tasks and corresponding dates

> abc
  code tasks.labels      start        end depends done
1  101       task 1 2018/04/01 2018/04/15      NA  100
2  102        task2 2018/04/15 2018/05/31     101   50
3  103       task 3 2018/06/01 2018/06/30     102    0
> gantt.chart(abc)
Error in `$<-.data.frame`(`*tmp*`, priorities, value = numeric(0)) : 
  replacement has 0 rows, data has 3
> 

Manually adding the required tasks and dates (as given in the help file example) is not practical for my situation ....





-----Original Message-----
From: David Winsemius <dwinsemius using comcast.net>
To: bbb_aaa <bbb_aaa using verizon.net>
Cc: r-help <r-help using r-project.org>
Sent: Sun, Apr 22, 2018 4:31 pm
Subject: Re: [R] Gantt Chart Using Plotrix


> On Apr 22, 2018, at 11:50 AM, bbb_aaa using verizon.net wrote:
> 
> Hi
> 
> I am trying to generate a complex Gantt chart using the gantt.chart function in the plotrix package.
> 
> Ideally I would like to use a spreadsheet to populate the activities (tasks) and start and end dates that this function expects and then export the spreadsheet file as a .CSV text file so I can read in this file to generate the gantt chart. Reading through the help file I have not been able to see what exactly this spreadsheet should like. The example provided with the "gantt.chart" function seems to indicate all the information needs to be hand coded. Because of the complexity of my chart this is not only very error prone but also is impractical. 
> 
> Can anyone help me with this? There is also a "get.gantt.info" function for creating a gantt object but the help on this is almost next to nothing !
> 
> Any help you can provide on this would be great.
> 
> There is another R package called "plan" which is very user friendly but for my purpose this doesn't have all the functionality I am looking for.

The method to generate the most interest and attention to a question is to post a reproducible example with a clear description of the desired "functionality".

> 
> Thanks
> indr
> 
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David Winsemius
Alameda, CA, USA

'Any technology distinguishable from magic is insufficiently advanced.'   -Gehm's Corollary to Clarke's Third Law