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Language for plotting in Mathematica 9

Posted 10 years ago

so i started working for a project on the birthday problem ( those who dont know may refer here: ) I created a table which had all values for the probablity and wanted to plot it . I name the table as t and gave command Plot[t], Mathematica plotted but it was a line plot and i wanted something like the screenshot like .the first in table ( i.e expr 1 in the table) with its value at y and 1 at x, 2nd with value at y and 2 at x and so on. the table has 365 so i cant do manually, please help

POSTED BY: Anvit Garg
6 Replies


enter image description here

POSTED BY: David Reiss
Posted 10 years ago

I don't have access to Mathematica right now will ListLinePlot give a similar result as the figure above

POSTED BY: Anvit Garg

Plot[t] is syntactically incorrect and will not display anything. Use

POSTED BY: David Reiss
Posted 10 years ago

S M Blinder, I don't think you've got my question I'll write my program for your assistance

f[x_] :=1- 365!/((365-x)!*365^x).   

This program would give the chances for 'x' number of days. This made a table for all probabilities

In[2]:t=Table[1- 365!/((365-x)!*365^x),{x,1,366}].  
out[2]:{0,.......(all the probabilities ) ......,1}
In[3]: Plot[t]

The output instead of what shown in the shot above, showed some random lines What I expected that the first expr I.e.0 in out[2] would have 0 as y coordinate and 1 as x coordinate and the last value would have 1 as y coordinate and 366 as x The above figure shows till 100 but I wanted to expand it till 366

Or I suppose if I write Plot[Do[Print[n," ",N[P2[n,365]]],{n,1,366}]] it'd plot the above figure ?

POSTED BY: Anvit Garg

You want ListPlot or ListLinePlot to plot a table of data values. Plot is for plotting a function.

POSTED BY: David Reiss

Is this what you want? Set d=366 to include possible Feb 29. Table example goes to n=23, can expand to 366.

In[1]:= P2[n_, d_] := 1 - d!/((d - n)! d^n)

In[2]:= P2[23, 366] // N

Out[2]= 0.506323

In[3]:= Do[Print[n, "    ", N[P2[n, 366]]], {n, 1, 23}]

1    0.

2    0.00273224

3    0.00818179

4    0.0163114

5    0.0270621

6    0.0403536

7    0.0560856

8    0.0741386

9    0.094376

10    0.116645

11    0.140781

12    0.166604

13    0.193929

14    0.22256

15    0.252298

16    0.282941

17    0.314288

18    0.346138

19    0.378295

20    0.41057

21    0.442779

22    0.474751

23    0.506323
POSTED BY: S M Blinder
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