Read/Write JTS Geometry/Polygon/Coordinate Sequence using WKTReader and WKTWriter

[Ams Sol]

Dear all,

All I need is a simple file to hold a set of polygon coordinate information for me. I want to be able to record those coordinates and retrieve them from my database (WKT seems standard).
In my android application I am making use of JTS libraries to draw buffers.
There are examples of reading writing with WKT but I cant help to notice for example this line:
wkt.read("LINESTRING(0 0, 1 1)");
seems useless for me. if i knew the coordinates of my polygon why would I want to read it from a file?
do you see where im going with this?
I need those (0 0) and (1 1) coordinates. I know what to do with them!

to further clarify my point following line (if existed) is more understandable for me:

Geometry[] geometries = wkt.read("path to my local WKT file");

I would highly appreciate any suggestions or alternatives.

many thanks in advance


[Diego Guidi]

On Thursday, October 9, 2014 1:30:46 PM UTC+2, Ams Sol wrote:

Geometry[] geometries = wkt.read("path to my local WKT file");



You can use 

wkt.read(new FileStream("path to my local WKT file") );

Anyway, your file should contains a single geometry, and not a set of geometries.

If your file contains more than one geometry, you can write all data in separate lines and then use a code like

foreach (String line in File.ReadAllLines("path to my local WKT file")
   wkt.read(line)

[Ams Sol]

perhaps we are talking about different APIs
Vividsolutions JTS java api does not have such an argument support for the read method of WKTReader class.

[Diego Guidi]

On Thursday, October 9, 2014 4:06:08 PM UTC+2, Ams Sol wrote:

perhaps we are talking about different APIs
Vividsolutions JTS java api does not have such an argument support for the read method of WKTReader class.

OPS, sorry :)

This group is for NTS, the C# port of JTS library.

You can ask for specific JTS support here: https://lists.sourceforge.net/lists/listinfo/jts-topo-suite-user

Anyway, I think my suggest is valid.

You should use java to read string lines from your file and then read geometries using WKTReader