Before you read “What is MycadLAYERS” first go to “What is a CAD Layer“.
MycadLAYERS is a custom Autolisp layer management program, included with MycadHELPER that offers both a custom designed Layer Naming Standard and the means of automatic creation and management. (Custom designed Standard how can that be? you might ask.). MycadLAYERS layernames are simpler, shorter, more meaningful and easier to use than most layer standards yet comply with the principles of all major international standards.
MycadLAYERS is an optional alternative to normal CAD dialogue layer naming and management procedures, such as LMAN, dramatically reducing operator effort. How much? I’m not really sure because it is so long since I have needed to use slow and clumsy layer management dialogues but my guess is that for me MycadLAYERS reduces the task to less than one quarter of the time required by conventional means while at the same time ensuring accuracy of naming and adherence to a naming standard.
MycadLAYERS provides both a Dialogue Box solution and a Commandline solution that ensure ease of use such that layer visibility can be automatically and rapidly filtered for any one of seven properties including drawing type, view-point and view-ID (level, section etc.). In this manner an entire set of drawings; plans, elevations, sections etc. can be created within a single model single file.
MycadLAYERS layernames are made up of twelve characters in seven fields but are nevertheless shorter than national Standards. An important difference in MYCADLAYERS is that they include fields for color and line-type that in addition to providing additional layer separation allow automatic assignment of color and line-type upon layer creation. In spite of the apparent complexity of MycadLAYERS it is never necessary to use graphical layer manager layer tables except for interrogating drawings from other sources.
MycadLAYERS
- Automates Layer naming. Eliminates confusion, delay and error in layer naming .
- Effective layer naming standard solves Layer NAME problem.
- Custom Layer MANAGEMENT commands eliminate difficulty of filtering layers.
- Supports OVERLAY modeling and WORKZONES.
- Aids viewing and printing
- Reduces drawing file size.
- Provides a link to BIM.
- Produces more intelligent and more accurate drawings
What if the MycadLAYERS system does not suit my profession? https://mycadhelper.com/layer-q-a/
Author’s opinion:
A Layers feature is the single most useful aspect of CAD and every “Layers” tutorial that you will find on the web will advise the use of a Layer naming Standard. But the advice generally stops there because no one seems to have settled on a really workable standard. Both the American and European standards try to be everything to everyone but succeed at being of little use in teir standard form. Nevertheless I strongly advocate the use of a standard; just not the ones proposed.
Everyone seems to agree that Layers are essential to CAD and a Layer Naming Standard is essential to the effective use of Layers but there are several National Standards and many more Custom Standards and little or no agreement on which one to use.
So which Standard should I use? The answer seems to be that you should use the Standard required by your employer as any standard is better than none.
Here is my personal advice:
This is a personal view challenging the regular explanations of CAD layers. It includes references to MycadKEYS and MycadLAYERS that are proprietary (but free) products and thus should be considered in conjunction with other “authorized” explanations.
MycadLAYERS, like many other Layer naming standards, extends the properties of objects by embodying properties in the Layer-NAME. These are: Object-type, Color, Line-type, Job-status, Drawing-type, View-point and View-ID. An example layername might be: “BRI 3 7 X 511 P 02” (expanded for readability) that means: “BRIck color3(green) line-type dashed(7), work-phase eXisting, drawing-type 001, Plan-view level 02”. This first defines the building element’s drawn graphics, its project status, and workzone (drawing identity). Looking a little closer it can be seen that the first section is five characters, the second is a single character and the last six.
If a drawing has a simple single purpose there is no need to include the last seven characters. A five character layer name may be sufficient and in fact for many simple drawings any more is a waste of time. So much for complex National Layer-naming Standards. MycadLAYERS provides an automated system for generating and managing Layers and permits the use of either five or twelve character Layer names depending on the complexity of the drawing or may simply be turned OFF if not needed.
MycadLAYERS layer commands guide user through layer naming and reject errors:
MycadLAYERS uses a built-in automated Lisp functions to create and manage layer names. A typical command is LR (Layer Resolve) that prompts the user to enter layer field codes for Drawing-type, View-Point and view-ID and will then freeze and thaw relevant layers to reveal the required WORKZONE of the drawing.
LR+ (Layer Resolve plus) andLR- (Layer Resolve minus) allow for various combinations of WORKZONES to be compared for alignments and completeness.
LR is designed for Model-space and a complimentary function WR (Workzone Resolve) manages the VPLAYER command in Paper-space to freeze and thaw the contents of Viewports. MycadLAYERS performs the WR operation automatically, simply by scanning the layer name of each selected Viewport using the embodied Workzone information to automatically VPLAYER FREEZE and THAW layers as required.
AutoCAD’s LAYERSTATE functions can only restore saved collections of layers and ignores any new layers created since a State was saved however MycadLAYERS’ Layer Resolve and Workspace Resolve functions freshly filter ALL layers new and old to produce a correct and up-to-date display thus avoiding the need for new layers to be added by the operator before re-saving the state.
MycadLAYERS provides BOTH a dialog and a Command line interface both of which are much faster and simpler to use than much simpler to use than Autocad LAYMAN layer tables. Gone is the problem of remembering how to create new layernames. Command line functions automatically prompt the user through the process of naming. Alternatively, while learning, one can use the built-in layer dialogue.
Automatic Layer Dialogue creates layers to a standard and applies correct color and line-type automatically.
A typical multi-level, multi-drawing type model with five overlaid plans – all layers visible.
The same drawing in Paperspace with Workzones (Layers) Resolved to display the five separate floor levels:
Typical Elevation:
MycadHELPER offers a custom layer naming standard for use in developing and defining layers. This is best explained by reference to MycadHELPER’s Dynamic Dialogue Layer command.
Layernames are made up from seven FIELDs using a total of 12 characters.