SPAM!!!: Re: [UMN_MAPSERVER-USERS] Shapefile to Mapfile

[Sylvain Beorchia]

Hi,


"According to our knowledge , a shapefile consists of only one particular 
geometric shape."
Yes, right.

" The map file's function is to combine all the shapefiles together n their 
segregation into their respective layers. Plz validate this information. "
Yes, if u want.

If you have 3 shapefiles (one for the points, another for the line, and the 
last one for the polygons), then you have to describe three layer in your 
mapfile. The first one will be of type POINT and the DATA will point to the 
shapefile that contains the points...he second layer will be of type LINE 
...


"we want to know as to how do we know what are the contents of a shapefile "
I don't understand what youe mean by that. The shapefiles are yours, so you 
know what's inside..., no ?


"We know that shapefile is a combination of .shp , .shx  and .dbf files. 
However how can we read the data from these files ."
Well , mapserver will display the contents of the shapefiles (ie draw an 
image). If you want to read the attributes in the DBF file, then you have to 
write some PHP code...for example.

Hope it will help you.

Sylvain Beorchia


  ----- Original Message ----- 
  From: Apeksha Bhambhani
  To: Sylvain Beorchia
  Sent: Wednesday, December 21, 2005 1:53 PM
  Subject: Re: [UMN_MAPSERVER-USERS] Shapefile to Mapfile


  Hey ,
  Thanks for ur reply . Could you plz help us further.
  According to our knowledge , a shapefile consists of only one particular 
geometric shape.  The map file's function is to combine all the shapefiles 
together n their segregation into their respective layers. Plz validate this 
information.

  However . we want to know as to how do we know what are the contents of a 
shapefile .We have read the online documentation , but are a lil confused. 
For eg. for a layer when we declare the ' TYPE ' ( corresponding to a 
shapefile ) , how do we know what type does the shapefile contain ?An image 
is a collection of various shapefiles . Hence how is the data of each 
shapefile interpreted ?  We know that shapefile is a combination of .shp , 
.shx  and .dbf files. However how can we read the data from these files .

  Awaiting your reply .

  Sylvain Beorchia <sbeorchia at gi-lemans.com> wrote:
    Hi,

    I think you don't understand the way mapserver work.
    You have to write your own mapfile and tell which shapefile you want to 
use for a specific layer.
    Check the online documentation to see how to declare a new layer for a 
shapefile.

    Sylvain B.

      ----- Original Message ----- 
      From: Apeksha Bhambhani
      To: MAPSERVER-USERS at LISTS.UMN.EDU
      Sent: Tuesday, December 20, 2005 9:07 PM
      Subject: [UMN_MAPSERVER-USERS] Shapefile to Mapfile


       If i have a shapefile , how do i convert it into an appropriate 
mapfile ? How will i know which layer corresponds to which .shp file ?
      Plz help

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