Lognormal scale boxplot

[PGStats]

Hi all,

This SGPLOT-HBOX graph is almost what I want

It shows the distribution of a concentration on a log10 scale. Means and far outliers are also determined on a log scale. What I would like is the X axis to show original units instead of log units. I need a solution that will accommodate BY processing with varying ranges on the X axis.

Thanks.

PG

[DanH_sas]

Can you post the SGPLOT code you're using? What logstyle are you using?

[PGStats]

Here is the code

proc sgplot data=metDet;

by element;

hbox logvaleur / category=grpOrganisme datalabel=site labelfar;

*xaxis type=log logbase=10 label="Teneur (mg/kg)";

xaxis label="Log(Teneur (mg/kg))" integer;

yaxis display=(nolabel);

run;

If I use the commented out XAXIS and valeur instead of logvaleur, the mean and outliers (and whiskers, I think) will be determined on a linear scale, which is not what I want.

PG

Message was edited by: PG Added the change of variable required to go to a linear scale.

[DanH_sas · Accepted solution]

Here is a trick that might work for you:

1. Create a user-defined format that maps the log tick values back to the original values. Create a mapping that will encompass the total range of data across the BY-groups. The INTEGER option that you're using should make that mapping easier to create.

2. Use the TICKVALUEFORMAT option to assign the format to the X-axis.

Hope that helps!

Dan

[PGStats]

But that's cheating! OK, I'll try it . Thanks Dan. - PG

[PGStats]

It worked nicely in most cases.  It wouldn't look good for cases where the X range is too short.

Thanks again!

PG