Re: Create Structure

In article
<5dd6376f-fcd5-474e-9f38-4208ab6d0c96@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
shapper <mdmoura@xxxxxxxxx> wrote:

[snip]

Hi,

I haven't use Matlab for 1 year and I am getting back to it.
I have been using a lot of Object Oriented languages such as VB.NET
and C#.
I think the confusion is coming from it ...

For example, in VB.NET I would do something like:

Structure Person
Dim Name As String
Dim Phone As Integer
Dim Country As String
Dim Birthday As String
End Structure

Now I have the structure fields and their types defined.

Then I could create a define any variable of type Person as follows:

Dim Employee_1 As New Person()
Employee_1.Name = "John"
Employee_1.Phone = "0211131"
Employee_1.Country = "US"
Employee_1.Birthday = "10.01.1980"

Dim Employee_2 As New Person()
Employee_2.Name = "Mary"
Employee_2.Phone = "0211231"
Employee_2.Country = "UK"
Employee_2.Birthday = "11.04.1982"

Then I could create a list of Employees
Dim Employees As List Of (Person)

Finally I would add the Employees to my list:
Employees.Add(Employee_1)
Employees.Add(Employee_2)

But as you see first of all I create the structure so I can define its
fields.

But when you write:
Employee_1 = struct('Name',{Bill},'Phone',{234234},'Country',
{France},'Birthday',{21.04.1900});

You create the variable and fill the values all at the same time. And
if by mistake I do something like:
Employee_2 = struct('Name',{Andrew},'Phone',{232343});

Then what happens when I added it to an array?

Sorry, just looking for the best way to do this.
My brain is still working with "well" defined objects.

Thanks,
Miguel

If you have only a few employees to keep track of here is what I would
do:

employees(1).Name = 'John';
employees(1).Phone = '0211131';
employees(1).Country = 'US';
employees(1).Birthday = '10.01.1980';

employees(2).Name = 'Mary';
employees(2).Phone = '0211231';
employees(2).Country = 'UK';
employees(2).Birthday = '11.04.1982';

It's that simple.

If you have many employees to enter then I would allocate the structure
array first. Here is one of many ways to do this:

num_employees = 100;
c = cell(1,num_employees);
employees = struct('Name',c,'Phone',c,'Country',c,'Birthday',c);

and then just fill in the structure array as before.

If you are reading your employee info from a file then I might go about
this in a different way depending on how the info is stored.

--
Doug Schwarz
dmschwarz&ieee,org
Make obvious changes to get real email address.
.

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