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Easy Trace Pro 8.2

New in build 1191 от 30.08.2006

    Object attribute requirements, quite simple yesterday, have become rather complicated today. Our last projects comprised tens of attributive data fields for each of fifty layers. Why so many? Well, just in a case!!!

    But the customer is always right, so, what are the ways to get out of the difficulties?

    • total revision of all attributes (an extremely laborious task and does not guarantee against errors);
    • automatic control of attribute data values and their interrelations (these relations should be known beforehand and an external software is required for attributive table analysis);
    • generation of inscriptions according to attribute values with their further comparison with ones in the image.

    There are other ways to simplify attribute input and check by they all require thoughtful project preparation ( whereas alternations of the qualifier are often being made just in motion!).

    First of all, they comprise careful setting of domains (ranges of possible values) for every attributive field, as well as refusal to fill some fields at all. It does not mean of course that these fields remain empty, by they may be filled automatically as there values depend on values in other fields.

    It may be much easier to make a simple software for post-processing - final modification of attributive tables after vectorizing. For example, fields Number of Storeys, Fire Resistance, Material and Dwelling/Non-Dwelling were provided for buildings. Our operators typed values in one field only and a simple program sorted them out by the fields later.

    It may be also reasonable to increase number of vector layers and decrise ranges of possible attribute values. Less variants - less mistakes.

    In general, orginize your work constructively! Well, let us return to the news...

    • Generation of attribute-based inscriptions proved to be very useful at attribute data control. But difficulties arise when the image is overfull with inscriptions. If this is the case, the only convinient way to deal with the numerous generated inscriptions is to place them over corresponding inscriptions in the image. This approach simplifies accuracy controll also as it is difficalt indeed to miss mismatches.

      Two options are added to the Generate Inscriptions Utility for inscription positioning:

      • Start editing of generated text - the program starts editing mode jsut after attribute input, and the new-generated inscription is already selected and ready for move;
      • Always place the text horizontally - for layers with areal (polygonal) objects.
      Inscriptions made of gaps only as well as decimal point and following zeros of numbers with empty decimal part are not output any more.
    • Unlike automatic check of topology for linear and polygonal objects (after forming of a set of tests of course!) check of attribute values taken directly from the image requires an orderly review of the vectorized map sheet. At that you may move the viewport with the cursor keys but any zooming disturbs the order of review and you only approximally return to the point where it happened.

      The Inspection mode is provided now for an orderly and scrupulous inspection of material. Specify the scale and the way of review, and you are sure not to miss any centimeter of the project.

      The project field will be divided in a stipulated number of shots with a specified mutual overlapping. The M and N hot keys are provided to jump to the next or previous shot. At that you may "go for a walk " along a lengthy object or zoom in when necessary. Next press of the M key (next shot) returns you to the shot from where you started. Press the key once more to jump to the next shot.

    • Attribute Domain Setting is simplified - double klick in the cell of the table opens the dialog box for the selected attribute.
    • Output of point heigh marks in the View Z mode is alternated - the points have the color of the layer now rather than the colors corresponding to their Z values. It makes them more noticeable on the screen.
    • Precision of the Medial Line tool is now specified in fractions of raster pixel, as it is much more obvious .
    • Corrected bugs and shortages:
      • The bug is corrected, which caused monstrous drawing deceleration for polygons with TRANSPARENT filling and THICK boundary line. A rear but indicative case - the bug was not in the program code but in API Windows. Polygon drawing is now being done in another way...
      • The program preserves line thickness at import now. Generally speaking, line thickness is useful at digitization only for object classification control. But if you have to alternate the project-prototype "while running", you may want to import some already digitized data back into it. That is the case line thickness import is provided for.
      • The bug is corrected, which caused line thinning in blocks at import of a block set from another project. Unexpected transparency of blocks filled in the source project was a particularly unpleasant surprise.
      • The bug is corrected in the Generate Inscriptions by Object Attributes dialog box - the program deleted the " Put inscriptions on the layer of labeled objects " mark if you clicked the Cancel button .
      • The Blocks dialog box: automatic expanding is provided for the block number column (that cut off three-figure numbers previously).
      • Compulsory substitution of black color in raster layers for the "default" color at project loading is canceled. The "default" color should be specified explicitly once, when you add the image to the project .
      • Generation of inscriptions: if no inscription template is specified for a layer and the "generate inscriptions" option is marked in the Object Attributes dialog box the program does not suggest any more to generate the missing template after attribute alternation .
      • A mean of description correction is provided for linetypes incompatible with ACAD standards .
      • The Attribute Value Parameters dialog box for point objects: a bug is corrected, which caused rescaling after alternation of screen output parameters for a group of objects .
      • Hatched area tracer ("Bog Tracer") was damaged in one of previous versions (and when? No information from users!) so that it often formed contours with chaotic protuberances. The tool is completely recast, and polygon merging algorithm is alternated to avoid forming of "sausage garland" instead of a united polygon.
      • The Medial Line of Polygons tool: the bugs are corrected that could cause program hang or error messages.

    New in build 1180 29.05.2006

    • Help articles about forming of the topological model, thematic displaying, and attribute applying in Easy Trace are completely rewritten. You will find them in the Easy Trace HELP sections "Database. Working with attributes -> Database operations" and "Vectorizing Technologies -> Topology in Easy Trace".
    • Import from ArcGIS is improved. The domains of the CLASS_ID field are being imported now. Although ArcGIS does not regards them as normal domains (they are called "subtypes"), it helps a lot at Easy Trace adjustment to the qualifier applied in the ArcGIS-prototype. You need not "draw" them into tables manually, the program automatically takes the domains for attribute table setting at import from MDB files.
    • Special folders (added SHX-fonts, icons of conventional signs, filling patterns and icons of customer tools) belong to the project now rather than to the program. They are stored in the project folder now and thus you may move it to another working place without any problem.
    • Thematic displaying of lines is improved - the rounding of line thickness is up to 0.1 pixel instead of 0.5.
    • The Topology Correction utility is enhanced. It now considers not polylines only but also points and insertion points of blocks.
    • Import of the block set from AutoCAD: 3D-polylines of blocks are being imported as usual (planar) lines.
    • Context help is now provided for error marks. Select an error and press F1 to open the HELP page describing this error.
    • Tips are added to dialog boxes of the Generate Inscriptions by Object Attributes and Topology Structure optimization utilities and Tracer setting .
    • The following bugs are corrected:
      • Error mark generating utilities check if any mark has been generated before they start the editing mode for correction.
      • Special error marks are provided for missed vertices and vertex duplication in the Topology Check-up utility. Previously, the program generated the "Cross-intersection" and "Vertices-intersection" marks instead .
      • Coordinate transformation at Import/Export: the program ignores empty lines in the CPT-file now. Previously, it considered such CPT files as ones with wrong format.
      • Medial Line tool: the bug is corrected, which could cause clipping of rather long "tails".
      • Generate Inscriptions by Object Attributes dialog box: maximal length of inscriptions is increased up to 100 mm in the hard copy instead of previous 10 mm.
      • Topology Correction utility: the bug is corrected, which arose when the "Consider polyline ends only" option was on. Previously, the result depended on the order of polylines, i.e. on the order of layers and polylines belonging to each of them .
      • The Transfer Z to/from Database dialog: the bug is corrected, which caused program termination if there were no fields in the project suitable for Z data storage.

    New in build 1172 15.03.2006

    • The Generate Inscriptions by Object Attributes utility is improved:
      • the unit of text height is mm of paper now;
      • you may put inscriptions to the layers of the objects they relate to;
      • inscription of a unclosed polyline will be generated over its longest segment;
      • defining of the insertion point and direction is improved at inscription generation for closed polylines;
      • if a single object should be labeled (when you close the Object Attributes dialog box), the program tries to place the inscription within the area represented on the screen;
      • for one-line inscriptions generated while in the tracing mode, the Editor will be taken automatically to specify the insertion point and text inclination;
      • if you try to generate inscriptions on a frozen layer, the program prompts you to unfreeze it or to cancel the operation.
    • It is needless to open the Object Attributes dialog box in the Unverified Objects' Indication mode at good visualization of attributes. The mark verified/unverified will be deleted automatically if you use the Shift+F/Shift+V combination (instead of usual F/ V hot keys) to navigate to the next/previous unverified object.
    • Relief vectorizing remains a topical task as well QC of the operation results. The Break Search utility is added to check smoothness of resulting vector lines. Accordingly, a new error mark is provided - "Polyline break".
    • The Convert Blocks to Points utility is added. The blocks selected with the Editor or belonging to the selected layer become points. If the target layer where the points will be generated is linked with an attribute table, block names and inclination angles may be saved to it as attributes.The utility may be useful at transfer from a collection of ACAD drawings to a full value GIS. For example, at pipeline management.
    • The Topology Check-Up utility considers point objects (points and blocks) at last. The errors mean the following for these objects:
      • «Dangling node» marks a point object that does not coincide with any vertex or node of any polyline. On the other hand, a polyline end coincident with a point object does not form a dangling node ;
      • «Vertex» marks a point object that coincides with a vertex, but not a node of any polyline;
      • «Pseudo node» indicates doubling of point objects of the same layer. The At Attribute Coincidence option is ignored.
    • Output of Project Information is modified to simplify automatic calculation of operator labour cost:
      • regional settings are no more in use at output of information on length of polylines belonging to a layer and number of vertices per length unite (to avoid gaps between digits, which were difficult to deal with);
      • data on length of polylines and number of point objects is now represented in the first two columns of the report.
      It is simple to make an EXCEL table for calculation of standard time at map sheet vectorizing basing on the average time required for input of a point object and 1 km of vector line belonging to a certain layer. Thus, payment by results can be easily introduced for operators.
    • The tool of contour enlarging/contraction is useful if you want to input only centerline of a road represented by a double line. It can now draw "parallel curves" for unclosed polylines. It means that you vectorize one roadside and then shift the curve to location of the centerline missing in the image.
    • A similar task - centerline drawing - but for elongated polygons - can be solved by the Polygon Centerline tool. A typical example of the tool applying is forming of a river net for scaled-drawn rivers.
    • The Check Polygon Cover utility is improved. It became faster and check of some rear ambiguous cases is added.
    • Editing of non-empty attributive data table's structure has become available at last!

      Previously, we often faced the situation when the customer asked to add several forgotten fields to the datatable when a pilot project was half-ready...

      Records remain mostly unchanged at table editing. "Mostly" means that data will be surely lost if you delete the field it is written in, and long records will be shorten if you make corresponding fields shorter. You will be warned anyway...
      It should be noted that manipulations over the table don't influence settings of thematic displaying.

      The following operations are available:

      • change of the fields' order;
      • field adding and deletion;
      • adding of the specialized fields _X_CPT_ and _Y_CPT_ designed for coordinates of reference points in the target system (to be used for transformation of vector objects' coordinates at Import or Export);
      • copying of table structure not from a DBF-file only, but also from a table linked to another layer of the current project;
      • editing of field names and formats in the table directly, without opening of a special dialog box.

    • The hot key for thematic displaying on/off is changed - it is Alt+D now;
    • First and end points of a polyline in the Polyline Vertices mode are now marked with filled squares similar to the Polyline Ends mode.
    • Two view modes are added for the Binarize and Create Color Set tools:
      initial image is displayed at Shift pressing,
      pixels included in the current mask only are displayed at Ctrl pressing;

    Bug correction:

    As it has been already mentioned above, a great "mistake correction work" was done in ET v. 8.2 due to applying of a new compiler and some slackness of the vectorizing market after the New Year.

    • Bug correction: the Topology Correction utility distorted polyline form badly due to "swinging" of high-order filters (trimming of filter accuracy and length are changed as well as estimation of preliminary smoothing);
    • Bug correction: after Undo applying in the Subject Layer Extraction tool, alternated RGB values of the selected pixel remained in the Parameters Bar of the dialog box.
    • Bug correction: the Z Check utility (in the "Check-up contours crossed by rivers" mode) marked a false error on the last (with stream) crossed isoline.
    • Bug correction: polygons with holes could be damaged at export sometimes (if the "remove bridges" option was on).
    • Bug correction: coordinates were shown wrongly in the Control Points dialog box at Export/Import with coordinate transformation using control points from a layer, although it didn't influence the operation itself;
    • Bug correction: the Topology Check-up and Topology Correction utilities stopped when number of vertices in a polyline exceeded 8190. The program now does not alternate such lines but copies them to the layer of errors and generates a corresponding message with the operation completed.
    • Bug correction: line form optimization didn't occur at tracing of a self-crossing line;
    • Bug correction: point import from a CSV file was impossible unless all 4 values (point type, X, Y, Z) were specified;
    • Bug correction: the program didn't cut out "holes" from polygons at import from MDB/MXD;
    • Bug correction: import of "holed" polygons and check-up of coordinate correctness for points and polylines vertices are provided for data import from MAP (GIS Panorama);
    • Bug correction: abnormal termination of the program occurred if you specified an object different from polyline with the Shears tool in the "existing polygon" mode (at Control pressed);
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