topic Re: Slope / Sensitivity / Correlation in SAS Enterprise Guide

Slope / Sensitivity / Correlation

matt23 — Tue, 26 Jun 2018 16:12:32 GMT

Hi, I need help getting something similar to this:

Here's a tiny bit of my data:

Year	Month	Day	Hour	Load	Temperature
2009	1	1	0	70232	20.87
2009	1	1	1	68422	20.61
2009	1	1	2	67014	20.27
2009	1	1	3	66068	20.52
2009	1	1	4	65781	21.45
2009	1	1	5	66308	21.69
2009	1	1	6	67559	21.87
2009	1	1	7	69150	22.39

Y = Load , X = Temp

Re: Slope / Sensitivity / Correlation

Reeza — Tue, 26 Jun 2018 16:14:05 GMT

What are your definitions of slope and correlation here?

Do you have SAS/ETS licenced?

You can check with:

proc product_status;run;

@matt23 wrote:

Hi, I need help getting something similar to this:

Here's a tiny bit of my data:

Year Month Day Hour Load Temperature

2009 1 1 0 70232 20.87

2009 1 1 1 68422 20.61

2009 1 1 2 67014 20.27

2009 1 1 3 66068 20.52

2009 1 1 4 65781 21.45

2009 1 1 5 66308 21.69

2009 1 1 6 67559 21.87

2009 1 1 7 69150 22.39

Y = Load , X = Temp

Re: Slope / Sensitivity / Correlation

matt23 — Tue, 26 Jun 2018 16:18:29 GMT

Actually working on 9.4 version right now

Re: Slope / Sensitivity / Correlation

pau13rown — Tue, 26 Jun 2018 16:24:07 GMT

im not sure it makes any sense. why is slope not negative in the 20s where it's dipping down? correlation=autocorrelation?

Re: Slope / Sensitivity / Correlation

Reeza — Tue, 26 Jun 2018 16:27:30 GMT

@pau13rown The graph is of slope over time, so the first image which is based off the second table below I assume.

@matt23 What are your definitions of slope and correlation? SAS is packaged by modules, so 9.4 does not tell me if you have SAS /ETS or specifically if you can use PROC EXPAND which is used to calculate moving statistics easily.

Re: Slope / Sensitivity / Correlation

pau13rown — Tue, 26 Jun 2018 16:34:48 GMT

oh ok, load "sensibility"

Re: Slope / Sensitivity / Correlation

matt23 — Tue, 26 Jun 2018 17:30:55 GMT

proc product_status;run

For SAS/ETS ...
Custom version information: 14.2

Sorry, I don't know what it means

Re: Slope / Sensitivity / Correlation

Reeza — Tue, 26 Jun 2018 17:41:16 GMT

Still need to know how you're defining slope and correlation here.

@matt23 wrote:
proc product_status;run  
For SAS/ETS ...
Custom version information: 14.2

Sorry, I don't know what it means

Re: Slope / Sensitivity / Correlation

matt23 — Tue, 26 Jun 2018 17:46:05 GMT

Load = Intercept + Slope * Temperature

So I believe the slope is from regression at a specific time if I am not mistaken

Correlation is a correlation between load and temperature at time

I don't know if it makes sense

Re: Slope / Sensitivity / Correlation

Reeza — Tue, 26 Jun 2018 19:15:18 GMT

You can't have a correlation or slope with only a single or even two observations, so it's a moving statistics of some kind. You need to define the window.

Depending on the window and exact calculations I'd probably recommend either an array approach or PROC EXPAND.

Here's the PROC EXPAND documentation:

http://documentation.sas.com/?docsetId=etsug&docsetTarget=etsug_expand_examples04.htm&docsetVersion=14.2&locale=en

Available transformations:

http://documentation.sas.com/?docsetId=etsug&docsetTarget=etsug_expand_details19.htm&docsetVersion=14.2&locale=en

Otherwise, an array.

http://support.sas.com/kb/25/027.html

You'll likely need to write the formula for the slope/intercept either way, by determining the formulas/components and doing the calculation.