Global Mapper vs. ArcGIS submitted 4 years ago by ButtCrackBandit GIS Technician I am very familiar with ArcGIS so give me the quick and dirty on the similarities and differences between the software's in the title. Not sure why this just popped up since the thread is old, but I will note the last item in the list (table join) is in Global Mapper now too! Thanks, Mike Global Mapper Guru [email protected] Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation.
Reading the dgn format is a norm in most GIS / CAD programs, but several of these (including Manifold GIS and gvSIG) have been reading the V7 format. AutoCAD and ArcGIS have already achieved it.Let's see how it does it:1 Lee dgn V8Interestingly, the files can be in a.tar,.zip or.tgz extension.Once selected, the program asks what projection will be assigned to them. These can be chosen from a broad list, or from a.prg file, or a.txt containing it. (Does not recognize the internal projection assigned by Microstation Geographics)Then you can define that you assign the same projection to all the selected files. You can also generate a projection to taste and save as.prj to call it at any time. It is also interesting that when reopening a file without projection, it stores the last one assigned.
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Ohhh yes Look at these simple features!!!In recent versions, it reads V8, surpassing programs such as Manifold GIS and gvSIG, with the demand that exists for this format and there being only these two among those generated by Microstation.Texts come as point objects, so they have that point in the lower left node. You can not edit the objects, you can touch and delete or edit vertices, but only at the view level.An annoying aspect of the import, is that if the objects are white and the background is the same color it will appear that they do not exist. To do this, you have to put a background of an unusual color, this is done with 'view backgroud color.' Export to dgnThe export is not bad, it will send what is visible in the catalog of the 'control center', which is a way to call the organization of views. Everything will go in the same projection.Among the most annoying, the size of the texts. To do this, ask to select a size and you have to try. In case of the labels of shapes, they become texts to the visible size.Generates a dgn 3D if the map has elevation data; And then leave the option so that the white objects can be seen black or vice versa according to the background.It also allows to export on matrix, very good for too large files.
This makes separate files go, and among the best, allows you to send the reference grid, which may well be in geographic coordinates (latitude / longitude) or UTM.The export will have problems with complex objects, as in the case of shapes that have holes, since Microstation up to the V8.5 versions still manages these elements as complex shains or cells.3. Extra optionsIt is worth mentioning that among the extra configurations you can define that when importing cells (cells, or blocks) into points; If not, exploit them as vectors.It is also possible to define that the color number can be assigned as an attribute in the table, which would allow the thematization of this criterion.In conclusion, moderately acceptable. Even though Does many things more. Thank you for clarifying Alvaro.And what options are there with?According to this Bentley page, it is possible to have some access to documentation regarding the dgn v8 format.«We have created a document that describes the native DGN file format used by the V8 generation of products. This file format is sometimes referred to as the 'V8 DGN' format.
The contents of the V8 DGN Specification document are sufficient to allow a skilled programmer to interpret the data within the V8 DGN file that MicroStation creates and processes. Reading DGN or another proprietary format, like the DWG, is not about getting it or not. They are closed formats, without open specifications, and therefore the only way to get a proprietary software to read (and / or write) is to reach an agreement (economic) with the commercial house on duty. From the free software the only thing that can be done is reverse engineering, very expensive and that does not guarantee any good result. In gvSIG we read, for example, DWG 2004, something that has not got any other soft.libre, but the effort invested is very large.What should be promoted from all areas is the use of open formats, such as GML, and gradually banish the use of closed formats, changing from year to year, and whose sole objective is to maintain market control.