Hi, Very good Larry, Just a question about text part : What is the concept behind annotation ? I know that many famous formats as DXF, MIF/MID, GeoConcept... have a text type, but I'm not a big fan of this. IMHO, displaying text is the "style" purpose and not a geometry type problem, but I may have missed some use cases. What are the candidate features for xxx_text layer ?
Thanks Michaël Larry Becker a écrit : > Making a generic capability to break out a layer into linestrings, > polygons, points, and annotation is an excellent idea. If you recall, > I tried to port over the capability to do this with the shapefiles > version of SkyJUMP's enhanced Save Selected Datasets command. Perhaps > the best way to do this is to refactor this capability out as a > separate class and plugin. > > I'll add this to my to-do list. Does anyone have specific use cases? > I'm assuming that the command would leave the original layer alone, > and create new layers for each of the geometry types mentioned above. > It would use the original layer name and append _line, _area, _point, > or _text (internationalized). Does this sound reasonable? > > The menu might say something like, "Extract geometry types to separate > layers", if that isn't too lengthy. > > regards, > Larry > > On 10/3/07, * Michaël Michaud* <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Larry Becker a écrit : > > > Hi Michaël, > > > > As I might have mentioned before, we use your dxf plugin > > extensively. I have been meaning to write that auto-style script > > too. Hope you get it done first :-) There are some issues with > > styling text, since you don't usually want the point displayed, and > > also, by default, the text centers on the point instead of left > > justifying. In fact, I added the new label style left > justification > > for just this purpose. > > Hi, it seems that reproducing the exact DXF layout may be more > difficult > than what I have thought. > > > > > This introduces an item on my dxf wish list. ESRI's DXF import > > automatically places text, points, linestrings, and polygons on > their > > own layer. I don't know of a precedent for this in JUMP, but I > don't > > see why it isn't possible, do you? Clearly it would make automated > > styling easier. > > IMHO, OpenJUMP has the great advantage to be able to manage > heterogeneous layers, and this capability must be used to preserve > imported file structure as close as possible to the source one (DXF, > MIF/MID) . > Dispatching features in different layers according to their > geometry (or > to an attribute value) is a generic need which should be > developped in a > separate plugin (not included in the driver). A plugin already > exists to > select features with a specific geometry type. Developping another one > to create a layer by geometry type should not be too hard. > > For DXF layers, I must admit that dispatching features from different > DXF layers into different OpenJUMP layers should take place in the > driver. It is just a bit more work to load features from a single file > into several layers. On the other hand, dispatching loaded features > using an attribute value is also an easy thing, and I already > developped > a plugin to do that (this can also be considered as a generic > function, > and can be useful in other situations). > > Michael > > > > > regards, > > > > Larry > > > > On 10/1/07, *Michaël Michaud* < [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > > <mailto:[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>>> wrote: > > > > Hi Peppe, > > > > I read your page about CAD. Good documentation ! > > Here are some propositions to be more precise about what the > > driver can > > do and what it cannot : > > - subset of supported geometries features (ex. POINT, > > POLYLINE..., I'll > > check that) > > - list of dxf feature attributes imported (COLOR, THICKNESS..., > > see the > > schema of an imported dxf file) > > - more precise description of how polylines are imported : > the DXF > > "closed" field is used to know if geometries have to be > imported as > > polygons or as polylines. This way the parser can make a > difference > > between a closed line (a polyline with identical first and > last points > > but without the closed dxf attribute) and a polygon (a > closed polyline > > with the closed attribute) : to test it, you can draw a > polygon and a > > closed polyline in jump, export it in dxf and import it back > into > > jump. > > - we should also write that the plugin is able to "export" > DXF files > > from OpenJUMP, even if this is less useful than importing cad > > drawings. > > - I did not test all the dxf version you considered (8 to > > 14/2002). Hope > > that works. The driver is based on an old version of DXF > > specification > > (10 or 12, don't remember exactly). Most of new features are > simply > > ignored. One major limitation is about local coordinates : > if some > > objects in the drawing are described in a local coordinate > system, the > > parser will ignore that and use them as if they were absolute > > coordinates. > > > > I read attributes such as color and thickness as normal jump > > attributes > > because basically, a jump driver read geometries and attributes, > > not styles. > > But reading your paper, I thought that it should not be too > > difficult to > > write a script which can apply styles to dxf-layers using their > > dxf-attributes (I'll give this a try) > > > > Michaël > > > > Giuseppe Aruta a écrit : > > > > > Hi Michael, > > > I wrote a small tutorial about CAD files > > > (http://openjump.org/wiki/show/CAD+Tutorial). > > > I did some consideration about your DXF plugin, I would > > like you give > > > it a look (maybe I made some mistakes about it). > > > > > > Thanks > > > > > > peppe > > > > > > L'email della prossima generazione? 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