Informal Presentation of Geo-Spatial Analysis Project

[Septic Blue]

I'm still working my way through your report, but I thought I could help out a bit when I came across your mention of the Center of Minimum Distance (CMD).

My project is still in its infancy, and that portion, which I have presented thus far, is in dire need of some 'fine-tuning'. But, thank you for your interest; and many thanks, indeed, for your assistance with the CMD estimation.

I have provided more accurate 'eyeball' estimations of the six murder-sites under consideration.



(1)-(Black Dot) Martha Tabram (7 August 1888) First-Floor Stairway Landing of George Yard Buildings, George Yard, Parish of St. Mary Whitechapel, County of Middlesex
Longitude: 0° 4' 18.45" West
Latitude: 51° 31' 0.60" North

(2)-(Black Dot) Mary Ann 'Polly' Nichols (31 August 1888) Gateway to Brown's Stable Yard, Buck's Row, Parish of St. Mary Whitechapel, County of Middlesex
Longitude: 0° 3' 37.53" West
Latitude: 51° 31' 12.14" North

(3)-(Black Dot) Annie Chapman (8 September 1888) Back Yard of 29 Hanbury Street, Parish of Christ Church Spitalfields, County of Middlesex
Longitude: 0° 4' 21.40" West
Latitude: 51° 31' 13.67" North

(4)-(Black Dot) Elizabeth Stride (30 September 1888) Gateway to Dutfield's Yard, Berner Street, Parish of St. George in the East, County of Middlesex
Longitude: 0° 3' 56.14" West
Latitude: 51° 30' 49.44" North

(5)-(Black Dot) Catherine Eddowes (30 September 1888) Southeast Corner of Mitre Square, Parish of St. James, Aldgate Ward, City of London
Longitude: 0° 4' 41.06" West
Latitude: 51° 30' 49.35" North

(6)-(Black Dot) Mary Jane Kelly (9 November 1888) Interior of 13 Miller's Court, Dorset Street, Parish of Christ Church Spitalfields, County of Middlesex
Longitude: 0° 4' 30.47" West
Latitude: 51° 31' 7.17" North

(Green Dot) Murder-Site Mean-Center
Southwest Corner of the Intersection of Wentworth Street and Osborn Street, Parish of St. Mary Whitechapel, County of Middlesex
Longitude: 0° 4' 14.18" West
Latitude: 51° 31' 2.06" North

(Purple Dot) My 'Rough' Estimation of the CMD

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The aforementioned coordinates, in decimal form …

Martha Tabram
Longitude: 0.07179167° West
Latitude: 51.51683333° North

Polly Nichols
Longitude: 0.06042500° West
Latitude: 51.52003889° North

Annie Chapman
Longitude: 0.07261111° West
Latitude: 51.52046389° North

Elizabeth Stride
Longitude: 0.06559444° West
Latitude: 51.51373333° North

Catherine Eddowes
Longitude: 0.07807222° West
Latitude: 51.51370833° North

Mary Jane Kelly
Longitude: 0.07513056° West
Latitude: 51.51865833° North

Mean or 'Average' Longitudinal and Latitudinal Coordinates
Mean Longitude: 0.07060417° West
Mean Latitude: 51.51723935° North

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I hope these coordinates will be of assistance.

I have a few questions/comments regarding your profile, but will have to address those at some point, later this week.

Again, Many Thanks

[The Good Michael]

Colin,

If Kosminski lived at 3 Sion Square or at 16 Greenfield, would that put him in the 90th percentile or greater?

Thanks,

Mike

[wesleyenglish]

Colin, thank you very much for pointing out the error of my crime scene locations. When I first ran the profile I used some coordinates I found unsourced on the web with no idea how accurate they were. I will rerun the profile tomorrow with the correct coordinates you so kindly provided.

I also look forward to your comments and questions.

On another note, I'm working on a researcher version of my system that I think you would enjoy playing around with. Unfortunately, it may not be done for a couple months.

[Chris]

If Kosminski lived at 3 Sion Square or at 16 Greenfield, would that put him in the 90th percentile or greater?

He certainly didn't live at 3 Sion Square in 1888. We know his brother didn't move there until after May 1889.

[The Good Michael]

Chris,

Thanks. I was looking at the old dissertation which surmised 1888.

Mike