Hi, 2011/9/3 Michael Barton <[email protected]>:
>Here are some results of my experiments with the graphical modeler in GRASS >6.5. Question: is the code the same for the modeler across all GRASS versions >currently? yes, the code should be same in all three active branches (as it's marked as experimental). > I tried to create a model that did the following steps using the Spearfish > demo data set: > 1) convert the vector streams map to raster > 2) run r.buffer on the rasterized streams > 3) convert the raster buffers to vector areas Here is workflow for this model for which the modeler has been designed by me (~ 1 year ago) [1]. > **Data Item" > > Adding data item works fine. But data items added with this button cannot be > linked with GRASS command items AFAICT. You must enter a data item in the > command module dialog and a data item is automatically generated. So what is > the point of this button? The mouseover calls this a data item. If it is Some users start the model with an action (as me) other with a data. The modeler should satisfy all users ;-) I fixed data item first approach some weeks ago [2]. > only a map, then it is probably easier for GRASS users to understand if the > mouseover text said "add map to model". If it includes other kinds of data, > I do not know how to indicate this. It can be anything you can list by g.list, so probably it should be called "element" ? > **Command Item** > > Mouseover to this item is "add action (GRASS module) to model". It would > probably make more sense to GRASS users if it said "add GRASS command to > model" The users, what do you think? > Once an action item has been added to the model, it opens a dialog that lets > the user select a GRASS command. A GRASS command typed in command text > window not recognized; the command must be selected from the combo box. The > command is then written to the command window. Fixed in SVN. > GRASS commands are duplicated in the combo box. Not all, anyway now fixed in SVN. > After selecting a command in the combox box and clicking OK, nothing shows > up in modeler canvas. Unable to reproduce it. * select command from combobox -> command is shown in command window * click on 'OK' -> action is added to the model, properties dialog shown > It turns out that after selecting the command from the combobox, it is > necessary to then place the cursor in the command window, after the command, > and press return. But the command must first be selected from the combobox. > Why have the command window at all if they must be picked from the combobox? > > Clicking OK in command dialog does not make it go away. It is necessary to > press the close button. The OK button should kill this dialog. > What does "parmeterized in model" mean? When it is checked, I can see no way > of connecting a data item to a command item. And I can find no place to > define a dummy data item into which data can be place when the model is run. > There is a section on variable controls, but it isn't clear how to use > these. See [3] Defining relation manually also fixed in SVN [4]. [...] Martin [1] http://www.youtube.com/watch?v=NeWavDSOhQk&feature=player_embedded [2] http://www.youtube.com/watch?v=lzlpfXNbjuA&feature=player_embedded [3] http://www.youtube.com/watch?v=j2UfmXbzvpg&feature=player_embedded [4] http://www.youtube.com/watch?v=Qxi_TblVYa0&feature=player_embedded -- Martin Landa <landa.martin gmail.com> * http://geo.fsv.cvut.cz/~landa _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
