Network Model - Arcs create unexpected results

Hello Spatial Users,
I have created a road network using the "Automatic" Network Definition, loaded all the nodes and links, and everything seems to be OK. It all validates, links and nodes have the correct values. It is an undirected network.
I can create shortest paths, but the issue I'm having is arcs within the links are returning unexpected results. It is as though the start of the arc is used and then it follows the arc and jumps back to the end of the line - so the shortest path is not the shortest with all this jumping from start to finish of the arcs within the line string.
Do I need to convert the arcs to lines or am I missing something else? I was hoping that because it was 'undirected' this would resolve this issue.
We are using 11.1.0.6.0.
Thanks for your help,
Kerryne

Hi, Kerryne,
NDM doesn't support arcs in its spatial path representation. For arcs it will only use start and end pt of the arc. You need to approximate arcs as linear segments for link geometry to get a more accurate path geometry.
Regards,
Jack

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datasource="mvdemo"
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height="793"
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05/09/29 10:22:20 Thu Sep 29 10:22:20 BST 2005 DEBUG [oracle.lbs.mapserver.core.MapperPool] getMapper() succeeded.
05/09/29 10:22:20 Thu Sep 29 10:22:20 BST 2005 FINEST [oracle.lbs.mapserver.core.RealWorker] adding additional themes...
05/09/29 10:22:20 Thu Sep 29 10:22:20 BST 2005 FINEST [oracle.lbs.mapserver.core.RealWorker] adding a predefined theme RAILNET
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at oracle.sdovis.theme.NetworkThemeProducer.processGeomLinkQuery(NetworkThemeProducer.java:2467)
at oracle.sdovis.theme.NetworkThemeProducer.prepareData(NetworkThemeProducer.java:329)
at oracle.sdovis.NetworkTheme.prepareData(NetworkTheme.java:64)
at oracle.sdovis.DBMapMaker$LoadThemeData.run(DBMapMaker.java:1740)
05/09/29 10:22:21 Thu Sep 29 10:22:21 BST 2005 ERROR [oracle.sdovis.DBMapMaker] Message:null
Description: Nested exception is:
Message:null
Description: Nested exception is:
java.lang.NullPointerException
Message:null
Description: Nested exception is:
java.lang.NullPointerException
java.lang.NullPointerException
at oracle.sdovis.theme.NetworkThemeProducer.processGeomLinkQuery(NetworkThemeProducer.java:2467)
at oracle.sdovis.theme.NetworkThemeProducer.prepareData(NetworkThemeProducer.java:329)
at oracle.sdovis.NetworkTheme.prepareData(NetworkTheme.java:64)
at oracle.sdovis.DBMapMaker$LoadThemeData.run(DBMapMaker.java:1740)
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Help!

That works, here is the output. I assume then that there is a bug?
<map_request
datasource="mvdemo"
width="1159"
height="793"
bgcolor="#ffffff"
bgimage=""
antialiase="true"
format="SVGZ_URL" zoomlevels="1" zoomfactor="2.0" zoomratio="1.0" infoon="true" navbar="no" onclick="shiftPressed(evt.shiftKey);svgClicked" onrectselect="shiftPressed(evt.shiftKey);svgRect">
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<Point>
<coordinates>-1.9082991021265139,51.53651515982236</coordinates>
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</geoFeature>
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<themes>
<theme name="RAILNET" >
<jdbc_network_query
network_name="RAILNET"
network_level="1"
jdbc_srid="8307"
datasource="mvdemo"
link_style="C.YELLOW"
direction_style="M.DIRECTION"
direction_position="0.5"
direction_markersize="10"
node_style="M.NODE"
node_markersize="5"
asis="false">
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minScale=Infinity
maxScale=-Infinity
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localThem=null
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The link to the Cerebellar Network: https://bitbucket.org/rdpinzonm/the-bicnn-model
Some details of the architecture of the cerebellar model:
In comparison with traditional ANN or RNN, the CNN has a very peculiar architecture with at least three layers (see below, Fig. 1). Inputs from the external world such as the position of the arms, legs, or sensors from a robot, are carried to the cerebellum via mossy fibers (mf). mfs are then processed in the input layer that includes Golgi (Go) and Granule cells (Gr). The ratio of Gr to mf is around 1000:1, whereas Go to Gr is 15000:1. Because of these numbers it has been proposed that the input layer of the cerebellum transform the input mfs into a sparse representation easing the work of the other layers. The second layer, the molecular layer that could be regarded as a hidden layer, includes Ba/St, Basket and Stellate cells. Their numbers are similar to Go, and their role is still a matter of debate. The last layer, the output layer, includes Purkinje cells (Pk). There are around 150.000 Gr per one Pk. This is a remarkable feature because the Pk is the only output of the cerebellar cortex. The output of the cerebellar cortex will eventualy reach the motor centers to correct movements. The CNN includes a plausible learning rule of the cerebellum at synapses between Gr and Pk. It works a an supervised anti-Hebbian rule or a anti-correlation rule in the following way: the teaching signal carrying the information about erroneous motions of the leg, arm, robot, etc, is conveyed by the climbing fiber (cf) to a single Pk. Then, the synaptic weights og Gr-Pk are decreased if there is both cf and Gr activity, whereas if there is not cf (i.e., error) the weights are increased. What this rule means, is that those Gr producing errors have their weight decreased, while those decreasing the error are promoted by increasing their weight.
Fig. 1. Neural Network Model of the Cerebellum. mf, Mossy fibers (inputs); Go, Golgi Cells; Gr, Granule cells; Ba/St, Basket and Stellate cells; Pk, Purkinje Cell (Sole output of the cerebellar cortex); cf, climbing fiber (teaching signal); pf, parallel fibers (synapses of pf-Pk are the only adjustable weights in this model, and main loci in the cerebellum); and IO, inferior olivary nucleus.
Cheers,
As you can see, the CNN has a very interesting and simple architecture with huge potential for adaptive controller. Do not hessitate in using the model, explore its code, adn post any thought, question, comment, issue. The labview project includes a demo for constructing a CNN and employ it in a classical fedback control of a DC FAN. Fig. 2-3 are some pictures of the application:
Fig 2. 3D construction of the CNN in LabVIEW representing a cube of the cerebellar cortex with edge length 100 um. Red mf, cyan Gr, green Go, yellow Ba/St, purple Pk.
Fig 3. Screen capture of the demo application in LabVIEW for the CNN used for controlling a Virtual Model of a DC FAN.
Thanks,

Hi gerh. Nice observation! Indeed there are many good softwares out there that are optimized for constructing neural network models. However, none of them have the flexibility and the capability of integration with Hardware that LabVIEW provides. You see, the CNN is being developed to be easily incorporated into engineering applications.
I haven't tried CV, but I think it could be possible to use the CNN with a 1D representation of the image.

Q: Using Path tables with Network Model (api)

Hello
Just a quick question to get on track.
In order to use the Path tables from a network model and to fill the geometry field, is this the right way to start working?
1. use the sdonm api to load network and analyse it (like the demo java file LoadAndAnlayze.java)
2. get the link array from the path object
3. itterate through the link array and use the
NetworkUtility.concatenateGeometry in order to end up with one sdo_geometry line object
4. Insert the appropriate path attributes into the Path table of the network via an SQL INSERT.
Is this the right way or is there an othaer/better way?
tx
Luc

A path by default does not have its geometry computed when it's created.
You can use method to compute its geometry (from link geometry).
If you have computed a path using NDM API(for example, shortestPath), you can
1. compute path geometry by using path.computeGeometry(double tolerance)
2. add the path to the network (network.addPath(path)
3. use NetworkManager.writeNetwork(conn, network) to populate path and path-link tables (assuming they have been created and registered in the network metadata already!)

Import Network Model from Shapefile

Hello,
How to import shapefile of roads network (network data model) into oracle spatial? (Oracle+Spatial 10.2g)
http://www.oracle.com/technology/software/products/spatial/files/shape2sdojava.zip deals only with normal (non-network) spatial data..
Huge thanks!

Ok, putting together your help, I managed to get myself a network model, hurray! But after this script in the end (could you peep through it and tell if anything's missing), VALIDATE_NETWORK gives me this:
SDO_NET.VALIDATE_NETWORK('SHP_TABLE_NET')
No Link Geom Metadata!
How (where) would I insert that Link Geom Metadata? All I found is USER_SDO_GEOM_METADATA, but there is nowhere to insert Link data. Googled, too.
The script, together with instructions, in case you make a nice use of it ;):
* Import a Shapefile into Oracle Spatial as a normal vector map;
* (ISSIT POSSIBLE TO AVOID THIS STEP? PL/SQL .sql file script? But that with DDL restrictions, clumsy variable definitions in DERLARE section etc. drove me nuts and I gave up, just asking users to do simple Find/Replace..):
Replace all occurrences of SHP_TABLE (case sensitive, can be part of a word) in the script below with the table name of the imported map from Shapefile (copy all script from below to a text editor and perform that replace);
* Copy/Paste (in Linux: select text and then use middle mouse button or Shift+Insert to paste it in a console) the script line-by-line, follow any severe errors (ignore ones, when it writes that table cannot be dropped when it does not actually exist :) and the like).
-- delete any tables existing
EXECUTE SDO_NET.DROP_NETWORK('SHP_TABLE_NET');
DROP TABLE SHP_TABLE_PLINK$;
DROP TABLE SHP_TABLE_EDGE$;
DROP TABLE SHP_TABLE_NODE$;
DROP TABLE SHP_TABLE_LINK$;
DROP TABLE SHP_TABLE_FACE$;
-- delete any existing geometry layer
EXECUTE SDO_TOPO.DELETE_TOPO_GEOMETRY_LAYER('SHP_TABLE', 'SHP_TABLE_TOPO', 'FEATURE');
DROP TABLE SHP_TABLE_TOPO;
-- then drop existing topology
EXECUTE SDO_TOPO.DROP_TOPOLOGY('SHP_TABLE');
-- create new topology
EXECUTE SDO_TOPO.CREATE_TOPOLOGY('SHP_TABLE', 0.5);
-- insert the universal face for an empty topology
INSERT INTO SHP_TABLE_FACE$(face_id, boundary_edge_id, island_edge_id_list, island_node_id_list, mbr_geometry)
VALUES(-1, NULL, SDO_LIST_TYPE(), SDO_LIST_TYPE(), NULL);
-- create an Oracle table with a feature layer
DROP TABLE SHP_TABLE_TOPO;
-- note, do not create unique id (PRIMARY KEY) as the data in teleatlas.dbf is inconsistent
CREATE TABLE SHP_TABLE_TOPO(id NUMBER, feature SDO_TOPO_GEOMETRY);
--CREATE TABLE SHP_TABLE_TOPO(id number, type varchar2(1), feature SDO_TOPO_GEOMETRY);
-- register feature layer with topology
EXECUTE SDO_TOPO.ADD_TOPO_GEOMETRY_LAYER('SHP_TABLE', 'SHP_TABLE_TOPO', 'FEATURE', 'CURVE');
-- create updatable TOPO_MAP object and load the whole topology in cache
-- since we just created the topology, the cache will be empty
EXECUTE SDO_TOPO_MAP.DROP_TOPO_MAP('SHP_TABLE_MAP_CACHE');
EXECUTE SDO_TOPO_MAP.CREATE_TOPO_MAP('SHP_TABLE', 'SHP_TABLE_MAP_CACHE');
EXECUTE SDO_TOPO_MAP.LOAD_TOPO_MAP('SHP_TABLE_MAP_CACHE', 'true');
-- copy/paste everything in one go between BEGIN and COMMIT; (including):
-- this one will demand a considerable amount of time
BEGIN
FOR r IN (SELECT id, geometry FROM SHP_TABLE) LOOP
-- associate topological primitives with features
INSERT INTO SHP_TABLE_TOPO(id, feature)
VALUES(r.id,
SDO_TOPO_MAP.CREATE_FEATURE('SHP_TABLE',
'SHP_TABLE_TOPO',
'FEATURE',
r.geometry)
END LOOP;
END;
COMMIT;
-- commit topology changes
EXECUTE SDO_TOPO_MAP.COMMIT_TOPO_MAP;
EXECUTE SDO_TOPO_MAP.DROP_TOPO_MAP('SHP_TABLE_MAP_CACHE');
-- check how many primitives were converted (should be the same number as primitives in the DB)
SELECT COUNT(*) FROM SHP_TABLE_TOPO;
-- after an initial bulk load into an empty topology, initialize_metadata
EXECUTE SDO_TOPO.INITIALIZE_METADATA('SHP_TABLE');
-- check here what tables have been created:
SELECT table_name FROM user_tables WHERE table_name LIKE 'SHP_TABLE_%$';
CREATE TABLE SHP_TABLE_LINK$
AS SELECT edge_id AS link_id,
start_node_id,
end_node_id,
geometry
FROM SHP_TABLE_EDGE$;
-- FULL NETWORK:
--CREATE TABLE SHP_TABLE_PATH$(PATH_ID NUMBER,
-- PATH_NAME VARCHAR2(200),
-- PATH_TYPE VARCHAR2(200),
-- START_NODE_ID NUMBER NOT NULL,
-- END_NODE_ID NUMBER NOT NULL,
-- COST NUMBER,
-- SIMPLE VARCHAR2(1),
-- PATH_GEOMETRY MDSYS.SDO_GEOMETRY);
--CREATE TABLE roads_incompl_plink$(path_id number not null, link_id number not null, seq_no number not null);
--INSERT INTO USER_SDO_NETWORK_METADATA(
-- network, network_category, geometry_type,
-- node_table_name, node_geom_column,
-- link_table_name, link_geom_column, link_direction,
-- path_table_name, path_geom_column,
-- path_link_table_name)
-- VALUES(
-- 'SHP_TABLE_NET', 'SPATIAL', 'SDO_GEOMETRY',
-- 'SHP_TABLE_NODE$', 'GEOMETRY',
-- 'SHP_TABLE_LINK$', 'GEOMETRY', 'UNDIRECTED',
-- 'SHP_TABLE_PATH$', 'PATH_GEOMETRY',
-- 'SHP_TABLE_PLINK$');
-- MINIMAL NETWORK:
INSERT INTO USER_SDO_NETWORK_METADATA(
network, network_category, geometry_type,
node_table_name, node_geom_column,
link_table_name, link_geom_column, link_direction)
VALUES(
'SHP_TABLE_NET', 'SPATIAL', 'SDO_GEOMETRY',
'SHP_TABLE_NODE$', 'GEOMETRY',
'SHP_TABLE_LINK$', 'GEOMETRY', 'UNDIRECTED');
SELECT SDO_NET.VALIDATE_NETWORK('SHP_TABLE_NET') FROM DUAL;
COMMIT;

Colors in JTable - unexpected result when scrolling

Hi Guys,
Looks like I'm having a problem with a JTable.
I have a list of items and they are distinguished by 2 colors (so the end-user can differentiate between them). Anyway, the table colors work ok but when using a JScrollbar the table receives an unexpected result � few of the first items (which are not identical) share the same color.
anyone?
Example of an output (Gil will be colored Green, Dan Yellow, James Green�and so forth)
Gil
Gil
Gil
Dan
Dan
Dan
James
James
James
James
my code looks like this (I'll appritiate if someone can point out where I can have the html tags to display it correctly)
aTable = new JTable(dataModel)
public Component prepareRenderer(TableCellRenderer r, int row, int col)
Component c = super.prepareRenderer(r, row, col);
Color bg = Color.YELLOW;
String[] valuesRaw = (String[]) model.elementAt(row);
if (changeRround)
name1=valuesRaw[0];
changeRround=false;
name2=valuesRaw[0];
if (!name1.equals(name2))
this.switchColor(bg,c);
changeRround=true;
return c;
public void switchColor(Color bg, Component c)
if (colorSwitcher%2==0)
bg = new Color(221, 250, 207);
c.setBackground(bg);
c.setForeground(Color.BLACK);
else
bg = new Color(253, 252, 193);
c.setBackground(bg);
c.setForeground(Color.BLACK);
colorSwitcher++;
}

I'm getting there...
        aTable = new JTable(dataModel)
            public Component prepareRenderer(TableCellRenderer r, int row, int col)
                 Component c = super.prepareRenderer(r, row, col);
                 Color bg = Color.YELLOW;
                 String[] valuesRaw = (String[]) model.elementAt(row);
                 if (changeRround)
                     name1=valuesRaw[0];
                     changeRround=false;
                     name2=valuesRaw[0];
                 if (name1.equals(name2))
                 else
                     this.switchColor(bg,c);
                     changeRround=true;
                 return c;
             public void switchColor(Color bg, Component c)
                if (colorSwitcher%2==0)
                    bg = new Color(221, 250, 207);
                    c.setBackground(bg);
                    c.setForeground(Color.BLACK);
                else
                    bg = new Color(253, 252, 193);
                    c.setBackground(bg);
                    c.setForeground(Color.BLACK);
                colorSwitcher++;
            }

Network Model: Class casting, NPE, method design

Hello, all!
I have several specific questions. I have an agent-based network model which has no current (visible) errors. I have several conceptual problems with it, nonetheless. I'm going to list the problems with the associated code, and would very much appreciate any suggestions and help that can be offered.
(1) This is in the secondary class called Node.java. Though I've never really used strings, I think I'm correctly using them in these two methods. In them, I take a 5-digit integer (culture, a random number from 10000-99999), attempt to convert it to a string, compare it to another agent's culture (digit by digit, with the int variable "similarity" increasing by 1 each time a matching digit is found), and calculate a double variable "culturalSimilarity" which will give me a percentage of .00, .20, .40, .60, .80, or 1.00 if none, some, or all of the digits match. If my predetermined value for culturalSimilarity is reached (probably 40%, and meaning that out of the 5 digit string each agent has, 2 digits match), I want the agent to change one of its non-matching digits to match one of those of the other agent. I don't actually know how to design the second method, and just have pseudocode there. First, does the first method work well, or are there things in there that I should change to improve it/make it better code? Second, how the heck do I design the second method? I don't even know where to start...
public void howCloselyDoOurCulturesMatch() {
       String stringCulture = String.valueOf(culture);
       int similarity = 0;
       for( int i = 0; i < stringCulture.length(); ++i ) {
            if( stringCulture.equals( stringCulture.substring( i, i+1 ) ) ) {
                 similarity++;
       if ( (similarity/5) >= culturalSimilarity) {
            exchangeCulture();
public void exchangeCulture() {
       //make one of my non-matching digits match one of his.
(2) This is in the primary class called Model.java. I am getting a NPE in the main model in the buildModel() method at this line: "Node node = (Node) nodeList.get(i);" I think it has to do with my class casting. My casting is a mess, but I'm not sure how to fix it. Here are the three methods in which I create a network with nodes in it.
public List makeNetwork () {
       System.out.println("Model.createWattsStrogatzNetwork() beginning.");
       List networkList = (List) NetworkFactory.createWattsStrogatzNetwork( numAgents,
              connectRadius, pRewiring, Node.class, Edge.class);
       System.out.println("Model.makeNetwork() finished.");
       return networkList;
public void sortNetwork() {
          Vector nodeList = new Vector();
          System.out.println("==> created variables in the step method");
          for (int i = 0; i < networkList.size(); i++) {
               Object o = networkList.get(i);
               if (o instanceof Edge){
                    edgeList.add(o);
               System.out.println("==> edge added to edgeList");
               else if (o instanceof Node){
                    nodeList.add(o);
               System.out.println("==> node added to nodeList");
       //HELP maybe convert nodeList and edgeList back to ArrayLists with Nodes and Edges in them, not
       //Vectors with objects in them.
private void buildModel () {
       System.out.println("Model.buildModel() beginning.");
       networkList = makeNetwork();//IS THIS A DUPLICATE? SHOULD THIS BE HERE?
       //HELP this is defined in two different places. nodeList needs to be only the Nodes.
       for (int i = 0; i < numAgents; i++) {
            Node node = (Node) nodeList.get(i);//HERE IS THE NULL POINTER EXCEPTION
            int x = Random.uniform.nextIntFromTo (0, worldXSize - 1);
            int y = Random.uniform.nextIntFromTo (0, worldYSize - 1);
            int nodeID = node.getID();
            node.setX(x);
            node.setY(y);
            int culture = node.getCulture();
            node.setNodeLabel ("Culture - " + culture);
            node.setBorderColor (Color.magenta);
            node.setBorderWidth (4);
            System.out.println("Model.buildModel() finished.");
}So first, "networkList" is a List full of different kinds of information. I try to sort out the Nodes in that list with the Vector "nodeList", into which I add Objects that WERE Nodes and apparently aren't anymore. There is a comment under the method sortNetwork() saying I need the nodes back in an ArrayList, but I'm willing to go with any kind of list that ensures that the Nodes still possess the information they had when they were in networkList, specifically the edges that go into and out of them. I don't know how much information I'm stripping away from the Nodes by calling them Objects and putting them in a Vector. Any suggestions are extremely welcome.

I think I may understand what part of the NPE problem is, but I don't know how to fix it. The problem seems to be with the variable "networkList". It stores a lot of information from the makeWattsStrogatzNetwork method. When I use this for loop:
          for (int i = 0; i < networkList.size(); i++) {
               Object o = networkList.get(i);
               if (o instanceof Edge){
                    edgeList.add(o);
               System.out.println("==> edge added to edgeList");
               else if (o instanceof Node){
                    nodeList.add(o);
               System.out.println("==> node added to nodeList");
          }I get the NPE at the first line. My problem is that I have to iterate through networkList and all the different kinds of information it possesses, and pull all the nodes out into a Vector called nodeList. How do I do that? The big disconnect in my whole model is right here--networkList contains variables, Nodes, Edges, and parameters. I just want to suck the Nodes out of the list. What am I doing wrong?

Itunes could not connect to the itunes store. a secure network connection was terminated unexpectedly

itunes could not connect to the itunes store. a secure network connection was terminated unexpectedly

سلام
قابل توجه کاربران ایرانی، این مشکل از ارتباطات زیر ساخته و مشکل از سیستم ما نیست.
متاسفانه فعلا باید صبر کنیم
موفق باشید
Hi
Notable Forums, the problem of the connection and the problem is not in our system.
Unfortunately, now we have to wait
Good luck

Oracle Map Builder Network Models

We are working on a project that displays road networks in Oracle Map Builder. Many of the network tables were irrevelant so they were deleted in SQL Developer. However, in Oracle MapBuilder all the Network Tables are still listed. Does anyone know how to synchonize Oracle SQL Developer and MapBuilder?
Thank you,
Renee

Hi Renee,
Were you using the Network Themes to create new Network Themes or were you using Geometry Themes?
If you used Network Themes, when you deleted the network (tables), did you delete its entry in user_sdo_network_metadata?
If you were using the Geometry Themes, did you delete the entry from user_sdo_geom_metadata after you delete the geom. table?
Try to remove the entries in the network/geom metadata views when you no longer need the network/geom tables.
You also need to commit after you deleted the tables.
What version of MapBuilder are you using? (click Help->About Oracle Map Builder)
jack

After mixing a project i select bounce and burn the disc that is burned plays on any cd player but when i try to burn the wav or mp3 file that was created the resulting disc will only play in a computer this also happens with video projects help please

after mixing a project i select bounce and burn the disc that is burned plays on any cd player but when i try to burn the wav or mp3 file that was created the resulting disc will only play in a computer this also happens with video projects help please are there any settings i need to alter as it seems the wav or mp3 file i ceated is being converted to a data file somewhere between the folder and disc drive

Same thing for a movie file.. If you want to play back the movie via a DVD and a DVD player you must create a Movie DVD and not just burn files to a data DVD... as Data DVDs are just storage devices for files and therefore will only work with computers...
Movie DVDs are special formats that include things like menus and special file formats.. so they can playback via a DVD Player...
You will need a 3rd party DVD Burning app like Toast which is what i actually use.... or the more popular DVD Creator app...to create and then burn a Movie DVD that will playback on a DVD Player....
https://answers.yahoo.com/question/index?qid=20101220205435AA70beb

Network Model - Arcs create unexpected results

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