On Sun, 31 Dec 2017 17:35:26 -0600, Andy Arledge wrote:
i had the row index 1st initially and got an error message that said:
org.apache.commons.math3.exception.DimensionMismatchException: 17 !=
293
so i tried reversing the row/columns, no luck got the message below.
Did you have a look at the unit tests[1]?
Hopefully, it should show how to set up your code.
Best,
Gilles
[1]
https://git1-us-west.apache.org/repos/asf?p=commons-math.git;a=blob;f=src/test/java/org/apache/commons/math4/stat/regression/OLSMultipleLinearRegressionTest.java;hb=HEAD
On 12/31/2017 4:56 PM, Gilles wrote:
On Sun, 31 Dec 2017 15:01:23 -0600, Andy Arledge wrote:
Hi,
I get an
"org.apache.commons.math3.exception.MathIllegalArgumentException:
not
enough data (17 rows) for this many predictors (293 predictors)"
with the following code : https://pastebin.com/aZ4DXQB3
My class extends OLSMultipleLinearRegression. I have 293 rows of
data
with 17 columns.
Is there something I'm missing here? I'm basing my work on the
example @
http://commons.apache.org/proper/commons-math/userguide/stat.html#a1.5_Multiple_linear_regression
Thanks for any guidance.
In Java, the "row" index is the first dimension.
Try
---CUT---
double[][] data = new double[myList.size()][17];
// etc.
---CUT---
HTH,
Gilles
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