Hello,

I am new to amelia and have been unable to find any info on the error I am receiving:

> tscsPlot(bd.am.poly1, cs = "Fraud", var = "n")

Error: Unsupported use of matrix or array for column indexing

The data is 3 variables: a date var used for the ts, a grouping var used for cs, and a count var, "n", which is my outcome variable that requries imputation.

My initial amelia call looks like this (note that it wasn't clear if amelia supported datetime objects, so I converted to seconds since epoch - if it can handle datetime objects and this conversion is unnecessary, it would be great to know that!):

>bd.am.poly1 <- amelia(bdsum, idvars = "date", ts = "datenum", cs = "call.type", polytime = 1, intercs = T)

Here's a sample of the data:

date call.type n datenum

1 2016-08-17 Criminal Mis C NA 17030

2 2014-02-10 TRAFFB-Traffic Complaint NA 16111

3 2015-11-03 WEAPO1B-Weapon I/P 1 16742

4 2016-09-03 Disturbance 0 17047

5 2015-02-24 Assault 0 16490

6 2014-08-06 Unknown Problem 0 16288

7 2014-08-28 INJACC3B-Injury Accident C 0 16310

8 2015-06-11 Recovered Stolen Prop 0 16597

9 2016-02-15 Lost Property 0 16846

10 2015-05-09 Welfare Check 2 16564

Thanks much,

Jon

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Jonathan Zadra, PhD

Data Scientist

Sorenson Impact Center

David Eccles School of Business, University of Utah