[postgis-users] Can DE-9IM patterns distinguish types of line meeting line at ends?

[Shaozhong SHI]

It looks like new methods need to be found.
Regards, David

On Saturday, 9 July 2022, Martin Davis <mtnclimb at gmail.com> wrote:

> No.
>
> On Sat, Jul 9, 2022 at 2:56 PM Shaozhong SHI <shishaozhong at gmail.com>
> wrote:
>
>> Line and line meeting at an end point can be found with a DE-9IM
>> pattern.  Can it be used to find different types of line and line meeting
>> at an end point?
>>
>> For instance,
>>
>> Type A:  The end point of a line meets with the start point of a line
>> Type B:  The start point of line A meets with the start point of line B
>>
>> Regards,
>>
>> David
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>
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