|Data format||Location on CD-ROM|
|Arc/Info Export *.E00||\CIRCUM\E00|
|CAD 'Drawing Interchange Files' *.DXF||\CIRCUM\DXF|
|ArcView 'shape' *.SHP||\CIRCUM\SHP
The data files in the \CIRCUM\COVERS and \CIRCUM\E00 directories require an Arc/Info or other GIS system in order to import and/or display them. The \CIRCUM\SHP\... directory contains Arc/Info 'shape' (*.SHP) files, which are directly viewable by both ArcView 2 or 3 and SurView. These .SHP files are copies of most of the line, polygon, and point data found in the \COVERS directory.
The \CIRCUM\SHPGEO\... directory contains a duplicate of \CIRCUM\SHP\... but containing geographic (longitude, latitude) co-ordinates instead of Lambert.
Note that ArcView 1 can not display .SHP files. ArcView 1 users must import the *.E00 files found in the \CIRCUM\E00 directory.
(Optional) installation of data files
SurView is quite efficient and can read and display the files directly from the CD-ROM: no installation of the data files is required.
However, if you wish to install the data files on your hard disk, create a directory (any name, any location) and copy the data file(s) to it (recall that the easiest way to do this is with File Manager or Explorer - just 'drag & drop'). A complete set of *.SHP files (the entire \CIRCUM\SHP directory tree) requires approximately 38 Mb of disc space.
When moving any of the files (for any reason), keep in mind the restrictions outlined in SURVIEW1.* documentation regarding the relative pathnames of the filenames contained in .FDL and .ASX files. In particular, the ...\ZLUT directory is required by the .ASX files and it must be located at the same level as the individual 'theme' directories (...\BASE, ...\GEOL10M, etc.).
There are four SurView file types that are used for the Circum-North Pacific files:
(a) Displaying the files
Once you have installed SurView properly (see \CIRCUM\DOC\HTML\SURVIEW1.HTM or \CIRCUM\DOC\PC\SURVIEW1.TXT) , so that the File Association is in the Windows registration database, you can use File Manager or Explorer to browse through the \CIRCUM\SHP directory tree. Any .ASX, .BOB, or .FDL file can be 'run' directly by clicking on it.
You can also start up SurView directly from the \CIRCUM\SURVIEW directory and use the File | File Display List menu item to select any combination of files you wish.
For example, you might select ROX10M.ASX, PLACER.ASX, and HYDRO.ASX to draw the geology, placer districts, and drainage for the map area.
Drawing order of layers
Each single file is a 'layer'. You can change the drawing order of each 'layer' or file by dragging and dropping the filenames in the listbox displayed by File | File Display List.
While viewing a collection of files, you may or may not see a legend. For some files, the legends are superfluous and are disabled (i.e. drainage, water mask, etc). Otherwise, you can use the View | Legends menu option to show or hide any of the available legends. Each legend can be resized. The vertical size governs the scaling of the legend elements, while the horizontal size only affects the amount of the legend that is visible. Right click on the legend window to bring up a dialog box which allows you to modify the shape and appearance of the legend.
Selecting a subset of displayable entities
Right click on the legend window (for example if you are viewing ROX10M.ASX, click on the legend window specifically for that file). Click the Select... button and a list of all legend elements will appear, all of which are initially selected. You can select a subset of these entities and close the dialog box, at which point only those selected elements will be drawn. For filled polygons, the outlines of the unselected polygons will be drawn, but without any fill colour. To completely suppress the outlines of the nonselected elements, select the Edit | Display Attributes menu item and select the Line colours, etc. item for the appropriate .ASX file. Check the Fill lookup must succeed option. When the map is redrawn, only the selected elements will be drawn, both in the map view and in the legend window. Explanation: by default, if either the line or fill colour lookup succeeds, the polygon is drawn accordingly. Checking the 'succeed' option ensures that only polygons for which the FILL colour lookup succeeds will be drawn.
By default, most polygons are drawn with a black outline and the fill colour is obtained from the lookup table (i.e. POLYLUT.DBF for ROX*.ASX files). However, this black outline can tend to dominate and obliterate the polygon filled interior when viewing a large area. Select the Edit | Display Attributes and menu item and then Line colours, etc. In the dialog box, the line colour can be suppressed by unchecking the Active checkbox. A similar de-activation can be applied to the fill colours (so that just the polygon outlines are drawn).
Disabling a file ('layer') entirely
You do not have to remove a file from the File Display List if you don't want it to be drawn. In the File | File Display List dialog box, any 'layer' or file can be temporarily removed from the drawing list by selecting the file and clicking Hide. Reverse the procedure to enable it later. The listbox displays the hide/show status on the left of the filename.
(b) Querying or 'picking' features
You can query polygons (ROX*.ASX geological regions), polylines (FLT*.ASX faults), and points (LODEDEP.BOB symbols) by 'picking' them with the right mouse button. SurView displays the corresponding record from the associated .DBF file. You must configure the right mouse button to pick lines, polygons, or points from the Pick | Right Mouse Button Pick Mode menu option. If you are having difficulty picking a feature, check the following:
- is the feature 'pickable' (see list below)?
- is the right mouse button in the correct mode (line, polygon, point)?
- is the line or point tolerance set appropriately?
Some files have been deliberately made nonpickable, since there is no worthwhile information attached to the features. Others are pickable:
File type 'Pickable' features?
|Type||Lambert Azimuthal Equal-Area projection|
|Projection origin||175 00 00 W (central meridian)|
70 00 00 N
|False origin||(easting, northing)=(0, 0)|
This information is NOT stored in the .<SHP SHX DBF> files produced by Arc/Info, so you may need the above information if you are viewing the .SHP files with ArcView. SurView also requires this information and it is provided to SurView via the Projection= entry in the *.ASX files.
The projection information is stored in the LODEDEP.BOB file (lode deposit symbols).
The 'Smart Cursor' (menu item Options | Smart Cursor) displays projected (easting, northing) co-ordinates for the above projection, but can also display (longitude, latitude) in several different formats, equivalent UTM zone, and National Topographic System (NTS) map sheet numbers.
The following SurView files and data files are provided on the CD-ROM. All of the data files are located in the \CIRCUM\SHP directory tree on the CD-ROM.
Colour/Style Lookup Tables for SurView (\CIRCUM\SHP\ZLUT)
|SurView (general)||SurView (Circum-North Pacific)||Top|