topic Re: SGPLOT POLYGON Issue in Graphics Programming

SGPLOT POLYGON Issue

MarkHiltbruner — Wed, 29 Jan 2020 23:43:34 GMT

Folks -

Thought I had correct code to create polygon (see AREABAR section of code), but the first hour does not plot. Looking at the AREABAR data shows

I
X D Y

0 1 0.0000
0 1 75.8477
0 1 75.8477
0 1 0.0000
0 2 0.0000
0 2 55.9871

Note the six occurences for the first x (hour). The rest of the graph looks good. Please see the attached pdf output, sas source and DATA=WORKAREA data. New with polygons, so bear with me.

Thanks for any help!

Mark

Re: SGPLOT POLYGON Issue

Rick_SAS — Thu, 30 Jan 2020 16:28:19 GMT

I've moved your question to the Graphics Community.

Because you did not provide a cut-and-paste example, I do not have time to try to test my idea, but I suggest you try adding VALUESHINT to the XAXIS statement. It might solve the problem, and it won't hurt.

xaxis offsetmin=.02 label='Hour of Day' values= (0 to 23 by 1) VALUESHINT;

Re: SGPLOT POLYGON Issue

ballardw — Sat, 01 Feb 2020 00:11:10 GMT

@MarkHiltbruner wrote:

Folks -

Thought I had correct code to create polygon (see AREABAR section of code), but the first hour does not plot. Looking at the AREABAR data shows

I
X D Y

0 1 0.0000
0 1 75.8477
0 1 75.8477
0 1 0.0000
0 2 0.0000
0 2 55.9871

Note the six occurences for the first x (hour). The rest of the graph looks good. Please see the attached pdf output, sas source and DATA=WORKAREA data. New with polygons, so bear with me.

Thanks for any help!

Mark

Same comment as last time: you don't have enough vertices. All of your X values are the same so all that could be attempted would be a vertical up and down line section as Y changes.

To plot Id=1 values I would expect the dat ato look something like:

0 1 0.0000
0 1 75.8477
4 1 75.8477
4 1 0.0000

If you have a datetime that starts at midnight consider what hour is involved. After a time of 23:59:59 when you add one second you get a time value of 00:00:00. So you are not getting a useable X increment for Hour=0.

So this data step:

DATA AREABAR;
  SET cpudata2;
  RETAIN x 0 id 0 ;
  id=id+1; y=0; output;
  y=lpctby; output;
  x=hour; output;
  y=0; output;
run;

needs some adjustment to handle hour 0.

Re: SGPLOT POLYGON Issue

MarkHiltbruner — Fri, 07 Feb 2020 23:03:04 GMT

Folks -

This code fixed my problem -

DATA AREABAR;
SET cpudata2;
RETAIN id 0 ;
id=id+1; y=0; x=hour-.5; output;
y=lpctby; x=hour-.5; output;
y=lpctby; x=hour+.5; output;
y=0; x=hour+.5; output;
run;

i finally figured out that I needed to calculate the width of the hour variable.

Closing issue. Thanks for all of the help.