R help - Oct 2008 - Simple Gantt like chart for numbers rather dates

I would like to produce a chart that looks like a Gantt chart (or
shingle plot), but instead of tasks you have variable names and
instead of start and finish dates you have an upper and lower numeric
value.

If that makes sense, is there an obvious way of doing this.

Thanks,

Graham

?segments

segments will draw the lines for you,  You can also use 'rect' for
rectangles.  So the functions are there to draw it, you just have to
decide how you want it to look.

On Fri, Oct 17, 2008 at 3:22 PM, Graham Smith <myotisone at gmail.com>
wrote:
> I would like to produce a chart that looks like a Gantt chart (or
> shingle plot), but instead of tasks you have variable names and
> instead of start and finish dates you have an upper and lower numeric
> value.
>
> If that makes sense, is there an obvious way of doing this.
>
> Thanks,
>
> Graham
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

You could consider modifying the code for gantt.chart in plotrix.

On Fri, Oct 17, 2008 at 3:22 PM, Graham Smith <myotisone at gmail.com>
wrote:
> I would like to produce a chart that looks like a Gantt chart (or
> shingle plot), but instead of tasks you have variable names and
> instead of start and finish dates you have an upper and lower numeric
> value.
>
> If that makes sense, is there an obvious way of doing this.
>
> Thanks,
>
> Graham
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

> You could consider modifying the code for gantt.chart in plotrix.
Not sure that I have the skills, but I was tempted when I found
plotrix earlier today, to see if it could be modified someway.

Thanks,

Graham

Gabor Grothendieck wrote:
> You could consider modifying the code for gantt.chart in plotrix.
>
> On Fri, Oct 17, 2008 at 3:22 PM, Graham Smith <myotisone at
gmail.com> wrote:
>   
>> I would like to produce a chart that looks like a Gantt chart (or
>> shingle plot), but instead of tasks you have variable names and
>> instead of start and finish dates you have an upper and lower numeric
>> value.
>>
>> If that makes sense, is there an obvious way of doing this.
>>     
Hi Graham,
Gabor is right, gantt.chart comes close but you will have to change all 
the POSIXct axis calls to plain old axis calls and manually create the 
list of gantt.info with the x values as numbers.

Jim

Jim,
> Gabor is right, gantt.chart comes close but you will have to change all the
> POSIXct axis calls to plain old axis calls and manually create the list of
> gantt.info with the x values as numbers.
Mmm, I have had a quick look at the code and it seems a bit beyond me,
but it could be a good exercise :-)

Certainly, this exactly what I want.

Thanks,

Graham

Then try something like this.  We plot it as a stacked
horizontal bargraph where the first bar in the stack is white
and with border = 0 so its not visible.

# test data - rows are from and to points and
# column names are the labels
mat <- matrix(1:10, 2, byrow = TRUE,
	dimnames = list(c("from", "to"), letters[1:5]))

bp <- barplot(mat, col = c("white", "lightblue"), border
= 0, horiz = TRUE)
text(mat[1, ], bp, mat[1,], pos = 4)
text(colSums(mat), bp, mat[2,], pos = 2)


On Sun, Oct 19, 2008 at 6:49 AM, Graham Smith <myotisone at gmail.com>
wrote:
> Jim,
>
>> Gabor is right, gantt.chart comes close but you will have to change all
the
>> POSIXct axis calls to plain old axis calls and manually create the list
of
>> gantt.info with the x values as numbers.
>
> Mmm, I have had a quick look at the code and it seems a bit beyond me,
> but it could be a good exercise :-)
>
> Certainly, this exactly what I want.
>
> Thanks,
>
> Graham
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>