[Date Index]
[Thread Index]
[Author Index]
Interrogating lists of unequal lenghths
*To*: mathgroup at smc.vnet.net
*Subject*: [mg67367] Interrogating lists of unequal lenghths
*From*: "kevin_jazz" <kevinbowman at mac.com>
*Date*: Tue, 20 Jun 2006 02:15:02 -0400 (EDT)
*Sender*: owner-wri-mathgroup at wolfram.com
I'm trying to understand how to assess the dimensions of a list
containing elements of unequal length.
Let's say I have the list with elements of equal sizes
In[12]:=
y={{1,2},{3,4},{5,6}}
Out[12]=
{{1,2},{3,4},{5,6}}
In[13]:=
Dimensions[y]
Out[13]=
{3,2}
Using the Dimensions function I can determine the size of the resulting
array. If, on the other hand, I set up the following list
In[5]:=
x={{1},{2,3},{4,5,6,7}}
In[6]:=
Dimensions[x]
Out[6]=
{3}
The Dimensions command tells me I have only 3 elements. But, I need
some way to figure out that the first sublist has length 1, second has
length 2, and the third has length 4 in some automated fashion. I've
looked through the other commands like Depth and Length but I don't see
anything that does this.
What's the right to do it?
Thanks,
Kevin
Prev by Date:
**Re: Help: ratio of integral of f(x)^2 to square of integral of f(x)**
Next by Date:
**Re: Help: ratio of integral of f(x)^2 to square of integral of f(x)**
Previous by thread:
**Re: Sturm-Liouville (eigenvalue/eigenfunction) problems**
Next by thread:
**Re: Interrogating lists of unequal lenghths**
| |