Hi Everyone,
I have a question regarding the construction of 3D graphs in 'R', BUT
these graphs also need to illustrate movement (with time) of the
prostate gland (using radiological techniques). I am not sure how to do
this in 'R' although I'm sure there is some way of doing it.
Below, I have copied and pasted some of the data with which I'm working
on. The data are for axial images of the prostate for four patients (N1,
N2, N3 and N4) over 20 time points. The numbers represent the average
amplitude of movement by the prostate gland in mm. The signs (positive
and negative) indicate movement away from or toward the baseline,
respectively. So, any deviation away from the baseline is '+' and any
excursion toward baseline is negative (with the baseline indicated by
Time=0).
I would like to plot 3D graphs illustrating movement of the prostate
with time for each of the four patients but do not know how. I am not an
expert in 'R' so any help will be very, very much appreciated.
Thanks.
Best wishes,
Suzanne
Time
N1
N2
N3
N4
0
0
0
0
0
1
121.8
-60.6
69.8
-122.6
2
19.9
-101.1
77.2
-142.9
3
19.9
-101.1
77.2
-120.4
4
19.9
-101.1
25.8
-131.1
5
44.2
-111.7
25.8
-128.6
6
44.2
-111.7
25.8
-305.7
7
50.5
-111.7
25.8
-232.4
8
75.8
-111.7
121.1
-201.8
9
63
-111.7
121.1
-201.8
10
3.3
-111.7
121.1
-201.8
11
38.9
-111.7
76.4
-175
12
38.9
-111.7
76.4
-175
13
-1.1
-111.7
76.4
-178.8
14
-103.1
-111.7
76.4
-176.2
15
-49.4
-111.7
76.4
-176.2
16
-80.6
-56.5
76.4
-176.2
17
-12.5
-94.7
-37.9
-171.6
18
-12.5
-94.7
-19.8
-186.4
19
-12.5
-94.7
-19.8
-241.1
20
-12.5
-59.4
9.8
-200
Suzanne St.Rose (DVM, MSc, PhD)
Statistician
Royal Marsden NHS Foundation Trust
Fulham Road
London SW3 6JJ
Telephone: 0207 808 2186
Email: suzanne.str...@rmh.nhs.uk
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