| 1410 |
</para> |
</para> |
| 1411 |
</section> |
</section> |
| 1412 |
|
|
| 1413 |
|
<section><title>Extensions included in Thuban package</title> |
| 1414 |
|
<para> |
| 1415 |
|
The extensions described in this section are part of the |
| 1416 |
|
Thuban package, but not activated by default. |
| 1417 |
|
You will find them in the Thuban installation directory |
| 1418 |
|
under <literal>Extensions/</literal>. Activate them as personal |
| 1419 |
|
extensions via PYTHONPATH as described in the previous section. |
| 1420 |
|
Stable extensions will appear under the menu |
| 1421 |
|
<menuchoice><guimenu>Extensions</guimenu></menuchoice> and |
| 1422 |
|
extensions which are in experimental state and therefore |
| 1423 |
|
not fully functional under |
| 1424 |
|
<menuchoice><guimenu>Experimental</guimenu></menuchoice>. |
| 1425 |
|
</para> |
| 1426 |
|
|
| 1427 |
|
<section><title>Stable extensions</title> |
| 1428 |
|
<para> |
| 1429 |
|
These extensions provide extra-functionality to Thuban |
| 1430 |
|
that has not (yet) been integrated in the main application. |
| 1431 |
|
They are considered to be free of bugs, but may be |
| 1432 |
|
further polished with helpful user interactions. |
| 1433 |
|
</para> |
| 1434 |
|
<section><title>gns2shp</title> |
| 1435 |
|
<para> |
| 1436 |
|
This tool converts data of the Geospatial Names Server |
| 1437 |
|
(GNS, see <ulink url="http://www.nima.mil/gns"/>) |
| 1438 |
|
into Shapefile format. |
| 1439 |
|
The above web-site offer to download named places |
| 1440 |
|
information grouped by countries for all of the world |
| 1441 |
|
except USA for which other data are provided. |
| 1442 |
|
</para> |
| 1443 |
|
<para> |
| 1444 |
|
If you download and unpack a package, you will have |
| 1445 |
|
a text-file with suffix .txt. |
| 1446 |
|
Selecting such a file via gns2shp will create the |
| 1447 |
|
corresponding Shapefile with the same basename and |
| 1448 |
|
place it in the same direcory. Afterwards it |
| 1449 |
|
is automatically loaded into Thuban. |
| 1450 |
|
The Shapefile will not automatically be delete afterwards. |
| 1451 |
|
</para> |
| 1452 |
|
<para> |
| 1453 |
|
The gns2shp.py module can also be executed on the |
| 1454 |
|
command line for batch processing purposes. |
| 1455 |
|
</para> |
| 1456 |
|
<para> |
| 1457 |
|
A sample (<literal>ls.txt</literal> for Liechtenstein) |
| 1458 |
|
is included in the directory |
| 1459 |
|
<literal>Extensions/gns2shp/test</literal>. |
| 1460 |
|
</para> |
| 1461 |
|
</section> |
| 1462 |
|
</section> |
| 1463 |
|
<section><title>Experimental extensions</title> |
| 1464 |
|
<para> |
| 1465 |
|
All all of these functions have to be handled with care, |
| 1466 |
|
since they are neither complete nor well tested. |
| 1467 |
|
They are to be seen as a proof-of-concept and may |
| 1468 |
|
additionally in some cases of practical help. |
| 1469 |
|
</para> |
| 1470 |
|
<para> |
| 1471 |
|
Any interest on further improvement of these extensions |
| 1472 |
|
should be communicated towards the developer and user |
| 1473 |
|
community. |
| 1474 |
|
</para> |
| 1475 |
|
|
| 1476 |
|
<section><title>importAPR</title> |
| 1477 |
|
<para> |
| 1478 |
|
This command offer to load an ESRI� ArcView� project |
| 1479 |
|
file (suffix .apr) and convert it for use within Thuban. |
| 1480 |
|
After selecting a apr-file to load, a list |
| 1481 |
|
will be presented that offers to select one of the views |
| 1482 |
|
of the apr-file, provided there is more than one. |
| 1483 |
|
Furthermore, the Session Info-Tree is extended with |
| 1484 |
|
a complete representation of the parsed apr-file. |
| 1485 |
|
</para> |
| 1486 |
|
<para> |
| 1487 |
|
The legend of Thuban does not yet cover all of the elements as |
| 1488 |
|
supported by the legend of ArcView�. Therefore, the Thuban |
| 1489 |
|
map will look different. Furthermore, the apr-format is |
| 1490 |
|
a proprietary format, not openly documented. |
| 1491 |
|
Therefore, the interpretation is |
| 1492 |
|
partly based on reverse engeneering and good guessing. |
| 1493 |
|
</para> |
| 1494 |
|
<para> |
| 1495 |
|
The file-paths within the apr-file may not fit and potentially |
| 1496 |
|
are subject to fix in the apr-file. You can do this |
| 1497 |
|
applying any text editor. The paths are either absolute |
| 1498 |
|
or relative from where Thuban has been started. |
| 1499 |
|
</para> |
| 1500 |
|
<para> |
| 1501 |
|
A sample for the Iceland data is included as |
| 1502 |
|
<literal>Extensions/importAPR/samples/iceland.apr</literal>. |
| 1503 |
|
The file-paths are relative from the Thuban main directory. |
| 1504 |
|
</para> |
| 1505 |
|
</section> |
| 1506 |
|
</section> |
| 1507 |
|
</section> |
| 1508 |
|
|
| 1509 |
<section><title>Writing simple extensions</title> |
<section><title>Writing simple extensions</title> |
| 1510 |
<para> |
<para> |
| 1511 |
Writing an extension for Thuban basically means to |
Writing an extension for Thuban basically means to |
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