Hello everyone, Here is the case. I have to select the best regression model that fits given data. I use the selection method based on Mallows' Cp statistic, and it was ok for every case and peace of data, until I cathced something strange. Here the result (produced by proc REG).           Number In Model Cp R-Square Adjusted R-Square AIC BIC Variables in model 5 . 1.0000 . . . r00 r01 r02 r03 r04 4 . 0.9917 0.9583 26.4694 16.4694 r00 r02 r03 r04 4 . 0.9615 0.8076 35.6473 25.6473 r00 r01 r02 r03 4 . 0.9549 0.7745 36.6003 26.6003 r01 r02 r03 r04 4 . 0.9487 0.7437 37.3680 27.3680 r00 r01 r03 r04 4 . 0.9450 0.7248 37.7931 27.7931 r00 r01 r02 r04 3 . 0.9438 0.8596 35.9159 27.9159 r01 r03 r04 3 . 0.9436 0.8590 35.9415 27.9415 r00 r01 r04 3 . 0.9177 0.7942 38.2105 30.2105 r00 r01 r03 3 . 0.8965 0.7413 39.5815 31.5815 r01 r02 r03 2 . 0.8670 0.7783 39.0883 33.0883 r01 r03 3 . 0.8636 0.6591 41.2374 33.2374 r02 r03 r04 3 . 0.8574 0.6436 41.5041 33.5041 r00 r01 r02 3 . 0.8573 0.6433 41.5095 33.5095 r00 r02 r03 2 . 0.8521 0.7536 39.7233 33.7233 r00 r01 3 . 0.8470 0.6174 41.9294 33.9294 r01 r02 r04 2 . 0.8468 0.7447 39.9358 33.9358 r01 r04 2 . 0.8467 0.7446 39.9384 33.9384 r01 r02 1 . 0.8467 0.8084 37.9385 33.9385 r01 2 . 0.8454 0.7424 39.9892 33.9892 r02 r03 3 . 0.8433 0.6082 42.0732 34.0732 r00 r02 r04 2 . 0.8413 0.7354 40.1489 34.1489 r00 r02 2 . 0.8212 0.7019 40.8646 34.8646 r02 r04 3 . 0.8204 0.5509 42.8909 34.8909 r00 r03 r04 2 . 0.8204 0.7006 40.8911 34.8911 r00 r03 2 . 0.8204 0.7006 40.8914 34.8914 r00 r04 1 . 0.8202 0.7752 38.8980 34.8980 r00 2 . 0.8196 0.6993 40.9183 34.9183 r03 r04 1 . 0.8101 0.7627 39.2235 35.2235 r04 1 . 0.7923 0.7404 39.7619 35.7619 r03 1 . 0.5200 0.4000 44.7881 40.7881 r02 Does anyone know what happened to Cp? And why? SAS prints no warnings, no notification about that. Here's the underlying data and problem design: I have prices (it doesn't really matter of what) by states (regions). I know the value of these prices on a step ahead. In each state a have a bunch of participants (traders), which have to buy from one or more region. Task: I need to find a price which describes the average price for traders. Skipping the data analysis step: I found that trader's price has a strong correlation with a state price (which is natural). Most of the traders can buy only in one state - so here we simply use predefined linear model. But some of the traders buy from two or more regions, and I generally can't use the infromation about which states exactly. So I decided to use a regression selection algo based on Cp statistic. And it works great for every trader except one. Could it be data specific (there is no empty values in input dataset). Thanks in advance! ... View more

Hello everyone, My problem is as following. Let's assume I need to put a picture in a document in order to replay it later to other destination (useful in EG to make a report). I need this image to have cerain width and height, so I add options to ods graphics statement. Here's example code: ods graphics on /   width = 900px   height = 1000px   imagefmt=png   imagemap=no   imagename="S_EE_pz_t"   noborder   noscale   ANTIALIASMAX=110000; ods document  name=global_report(write); proc sgrender ... run; ods document close; ods graphics off; The SAS result is okay, it has selected image size, but when I trying replay the picture, the result is slightly rescaled (always to 640x480). Moreover, since it's a vector graphics, it's being rescaled like a vector, and the result is kind of messy. Is there a way to prevent rescaling or any other way to prevent images of being distorted? Or why the maximum size is 640x480 and is it a way to increase it? Thanks in advance. ... View more