mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 14:45:29 +00:00
87 lines
2.5 KiB
Awk
Executable File
87 lines
2.5 KiB
Awk
Executable File
# The contents of this file are subject to the Mozilla Public
|
|
# License Version 1.1 (the "License"); you may not use this file
|
|
# except in compliance with the License. You may obtain a copy of
|
|
# the License at http://www.mozilla.org/MPL/
|
|
#
|
|
# Software distributed under the License is distributed on an "AS
|
|
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
# implied. See the License for the specific language governing
|
|
# rights and limitations under the License.
|
|
#
|
|
# The Original Code is linear-regression.awk, released November 13, 2000.
|
|
#
|
|
# The Initial Developer of the Original Code is Netscape
|
|
# Communications Corporation. Portions created by Netscape are
|
|
# Copyright (C) 2000 Netscape Communications Corporation. All
|
|
# Rights Reserved.
|
|
#
|
|
# Contributor(s):
|
|
# Chris Waterson <waterson@netscape.com>
|
|
#
|
|
# Alternatively, the contents of this file may be used under the
|
|
# terms of the GNU Public License (the "GPL"), in which case the
|
|
# provisions of the GPL are applicable instead of those above.
|
|
# If you wish to allow use of your version of this file only
|
|
# under the terms of the GPL and not to allow others to use your
|
|
# version of this file under the MPL, indicate your decision by
|
|
# deleting the provisions above and replace them with the notice
|
|
# and other provisions required by the GPL. If you do not delete
|
|
# the provisions above, a recipient may use your version of this
|
|
# file under either the MPL or the GPL.
|
|
#
|
|
|
|
function regress(DATAPOINTS,SX,SY,SXY,SX2)
|
|
{
|
|
b1 = (DATAPOINTS * SXY - SX * SY) / (DATAPOINTS * SX2 - SX * SX);
|
|
b0 = (SY - b1 * SX ) / DATAPOINTS;
|
|
return b1 " * x + " b0;
|
|
}
|
|
|
|
BEGIN {
|
|
if (!Skip) Skip = 0;
|
|
if (Interval)
|
|
{
|
|
Count = 0;
|
|
IntervalCount = 0;
|
|
}
|
|
}
|
|
|
|
NR>Skip {
|
|
sx += $1;
|
|
sy += $2;
|
|
sxy += $1 * $2;
|
|
sx2 += $1 * $1;
|
|
#print NR " " sx " " sy " " sxy " " sx2
|
|
|
|
if (Interval)
|
|
{
|
|
if(Count == Interval-1)
|
|
{
|
|
IntervalCount += 1;
|
|
|
|
print NR-Count, "-", NR, ": ", regress(Count,isx,isy,isxy,isx2);
|
|
|
|
Count = 0;
|
|
isx = 0;
|
|
isy = 0;
|
|
isxy = 0;
|
|
isx2 = 0;
|
|
}
|
|
else
|
|
{
|
|
Count += 1;
|
|
isx += $1;
|
|
isy += $2;
|
|
isxy += $1 * $2;
|
|
isx2 += $1 * $1;
|
|
}
|
|
}
|
|
}
|
|
|
|
END {
|
|
if(Interval) {
|
|
print NR-Count, "-", NR, ": ", regress(Count,isx,isy,isxy,isx2);
|
|
}
|
|
print regress(NR-Skip, sx, sy, sxy, sx2);
|
|
}
|