>I am getting frustrated with a bit of code I am writing and I am hoping
that
>some of you can point out what I am missing. I have added the code below.
>Now every time I run the programme I get a datatype mismatch error and I
>think it is to do with the table group_lists as it occurs when it reaches
>the line " fetch rec du_group from group_list"
>
>
>dim xmax, xmin, ymax, ymin as float
>dim du_group_num_rows as string
>dim groups, du_group as integer
>
> open table "grid_group_boundary"
> drop table "grid_group_boundary"
>
> create table grid_group_boundary (max_x float, min_x float, max_y
> float, min_y float)
>
> for groups = 1 to group_num
> select * from du_sel where group_id = groups into group_list
> commit table group_list as group_list
>
> du_group_num_rows = tableinfo(group_list, Tab_Info_Nrows)
>
> for du_group = 1 to du_group_num_rows
> fetch rec du_group from group_list
It looks to me that you have a datatype mismatch in this statement:
for du_group = 1 to du_group_num_rows
du_group is dimensioned as an integer, but du_group_num_rows is dimensioned
as a string. I don't know why you don't get an error when TableInfo() tries
to put the number of rows into that string variable, but the syntax of the
For...Next statement explicitly calls for a numeric expression.
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