On Mar 27, 2019, at 5:18 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote:
You are missing a crucial point. The reals are well ordered; higher dimensions are not. Therefore 2d quantile contours are not unique.
Of course assuming I understand your query correctly.
Bert
On Wed, Mar 27, 2019, 13:55 Bernard McGarvey <mcgarvey.bernard at comcast.net> wrote:
If I understand correctly the ContourLines function gives you the contour lines when you put in the data. But before this I need to data to put into that function. I think this is something like a 2D CDF of the data that then leads to the 2D quantiles but I am not 100% sure. What I am basically looking for is the 2D curve that encloses say 95% of the data in a similar fashion to a 1D quantile where the quantile represents the value that x% of the data is below. I think what I am looking for is the 2D bivariate version of the 1D quantile plot (where the quantile value is plotted vs the % value).
I hope this makes some sense.
Bernard McGarvey
Director, Fort Myers Beach Lions Foundation, Inc.
Retired (Lilly Engineering Fellow).
On March 27, 2019 at 3:57 PM Paul Murrell <paul at stat.auckland.ac.nz> wrote:
Are you looking for the contourLines() function ?
Paul
On 28/03/19 8:37 AM, Bernard McGarvey wrote:
John, I have attached a pdf of the plot. Hopefully you can read this.
If I understand correctly, this plot is basically the 2-D version of the 1-D quantile plot.
Thanks
Bernard McGarvey
Director, Fort Myers Beach Lions Foundation, Inc.
Retired (Lilly Engineering Fellow).
On March 27, 2019 at 7:44 AM John Kane <jrkrideau at gmail.com> wrote:
The figure did not get through. Perhaps try a pdf?
On Tue, 26 Mar 2019 at 13:41, Bernard McGarvey
<mcgarvey.bernard at comcast.net> wrote:
I want to see if I can reproduce the plot below in R. If I understand it correctly, i takes my bivariate data and creates quantile density contours. My interpretation of these contours is that they enclose a certain % of the total data. I am using the bkde2D function in library KernSmooth which gives density values that can be plotted on a contour plot but I would like the curves that enclose a given % of the data, if that is possible
Thanks
Bernard McGarvey
Director, Fort Myers Beach Lions Foundation, Inc.
Retired (Lilly Engineering Fellow).