goodmoring

nobody here

ye

bute here

if we do discussin herre

than anyonecancome

we shoud useit]

well, unfinished business re your GIS questions, that's only the line line intersection thing

hmmyes

docs.google.com/drawings/…

h wow

you could see drawing?

oki have o look it

try menu [View -> Zoom in]

think of the two lines (red and blue) as really overlapping, not side by side

oh babs

its a good acilty

faciiy

facility

:-)

well you have a better drawing tool in Word, but since your Word is Korean...

anyway, end point of blue line is in the middle of red line

in other words, boundary of blue line intersects interior of red line

and at the same time, part of the blue line is outside the red line

or in other words, at the same time, blue line intersects exterior of red line

yes

righ

but itink tverlp

i think itsverlp of ines

what?

overlap of lines

yes

well ok fne

i think this situation is important to handle correctly in function that checks for intersection of interior of line L1 (blue) with exterior of line L2 (red)

now in the drawing below I've tried to show when blue line is contained within the red line:

docs.google.com/drawings/…

as i understand it this is the only case where the interior of blue line does not intersect exterior of red line

is that correct?

hmmm

well yes

i hoped so

well yes

because then, if you were analyzing a function that determines intersection of interior of blue line with exterior of red line, then ...

this is the case that it must be checking

m yes

thna ihave a look to that function again

i think that if i were to code such a function

then would first check if lines are parallell or not

ok wait

ahahn

they must be parallell to produce the case in the drawing

yes

ok wait

i talk wih ouafter some time

ok. maybe

cu

pleasedo't ind

i need theck y old mistakes

tha i will think about ths and new work

what is the mean of multi points in GIS context

???

probably just "multiple points". e.g. for a "linestring" that means the possibility of more than 2 points

yes

as i understand by the name of multipoint

that it means multiple points at same location

like cluster of starts

stars

don't think so. it's not used on its own. but you can say "multipoint line". for example.

the multilines word is used

not multipoint lines

it's the same thing, something that involves or is defined by multiple lines

you could just say "many" instead of "multiple"

like, "multicellular organism" → organism made of many cells

ok?

ok ok

jsut tell me that mean of multipoint

same thing. that means something that involves or is defined by multiple points

it's just general English

nothing in particular to do with GIS

yar no

it have meaning

i have read

but i do't remember

multiple: "Having, relating to, or consisting of more than one individual, element, part, or other component; manifold."

docs.google.com/drawings/…

what means by "educated ignorescy"

hy babs

what mean by brb

have u seen malaisya or srilanka on the map

so we will use multipolygon option instead of a simple polygon

and multi point

will represent mulitple points in a single record

Alf please keep these all text in fac route

so that i can read it any time when i need it

ok bye

take care

babs

Alf remember keep stars on thses above text about multipoint and multipolygon

okok

please

please do it at least do this work for me

i expect a good respond from you

@tina: "educated ignorance" is when you have an education and because of that you believe you understand or know something, but you really don't understand it at all. perhaps the education didn't really teach you.

@tina: and no, no, and no again. get this. neither i nor anyone else is going to do your work for you. we're willing to help you. doing your work for you is the opposite of helping you.