Mathematica Tables sets
I have three tables X,Y,Z
. While X
& Y
define my grid points the Z
depends on every point of X
and Y
.
x = Table[i, {i, 0, 10, 1}]
开发者_运维技巧y = Table[j, {j, 0, 10, 1}]
z = Table[5*i + j, {i, 0, 10, 1}, {j, 0, 10, 1}]
Now I want the final list to look like this [{x1,y1,z1},{x2,y2,z2}}
I want to create a set of corresponding x,y,z
values from the table given above.
In this case you can also produce your combined list with Array
as follows:
Array[{##, 5 # + #2} &, {11, 11}, 0]
See Function
and Slot
. rcollyer has already shown how to "split out" x, y, and z from this.
When starting with unrelated lists x
and y
you can produce the combined list with Outer
:
Outer[{##, 5 # + #2} &, x, y, 1]
Unless you need the the x
and y
lists, I'd combine this in one Table
as follows:
Table[{i, j, 5*i + j}, {i, 0, 10}, {j, 0, 10}]
Note, I removed the step length ({i, 0, 10, 1}
-> {i, 0, 10}
) as it's implicitly set to 1 if it is not included.
Edit: If you wish to have the x
and y
lists, also, you could do the following
Table[{i, j, 5*i+j}, {i, x}, {j, y}]
As of v.7, Table
accepts lists of values in addition to start and end points. This doesn't address whether you need a separate list for z
, also. In that case, I'd start with the first form bit of code, and using Transpose
(per your other question) to set the individual lists, as follows:
coords = Table[{i, j, 5*i + j}, {i, 0, 10}, {j, 0, 10}];
{x, y, z} = Transpose @ coords;
One way to do it starting from your
x = Table[i, {i, 0, 10, 1}];
y = Table[j, {j, 0, 10, 1}];
z = Table[5*i + j, {i, 0, 10, 1}, {j, 0, 10, 1}];
is
Flatten[
MapThread[{Sequence @@ #1, #2} &,
{Outer[{#1, #2} &, x, y], z},
2
],
1
]
(I'd love to see me try to understand this in a week) which gives what you want.
This also works:
p = {};
Do[
Do[
AppendTo[p, {x[[i]], y[[j]], z[[i, j]]}],
{j, 1, Length@y}
],
{i, 1, Length@x}
]
and gives the same answer.
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