Parameters | Spectral Preprocessing | Response Density SAS Statements

Density is the output from SAS PROC KDE and contains the kernel-smoothed density estimates based on the input values of Z. Depending on the scale of Z, you might wish to perform an additional transformation using this code.

• For example, suppose Z contains the original spectral intensities, and you want to compute a shifted log2 response. Then a possible transformation would be Response = (log2(Density+(1/32)) + 5) * 5.

• Alternatively, if your Z values are already log2 transformed, you might wish to work directly with the Density values.

• Refer to Base SAS documentation for additional details about SAS programming statements.

Enter the statements directly into the Response Density SAS Statements text field.