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OCAD & Mapping Snippets

1915 Vic Geo Survey Dunolly map extract

OCAD reminders

Some tips that tend to be overlooked.lightbulb

40%, 20% discounts ending

And another tip – the big discounts for updating OCAD 12 or 11 to 2018 finish at the end of next month. If you have been thinking about it, I suggest you either do it or diary it.

Team OCAD edition image4 clubs benefit from Team licences

Four clubs have taken advantage of the opportunity to acquire Team licences. In three of those clubs, some club members transferred their licences to the club. Then the club traded each licence in for two Team licences.

Massive savings, significant flexibility. Check out my recent post Hidden Value in OCAD Team Editions for more info.

GIS file conversions

A conversation that crops up more frequently in the lidar era is how to convert a file from one format to another. The FME Integrations Gallery may have the answer for you.

Conversion categories include CAD, GIS & Mapping, Lidar & Point Clouds. The Cloud version appears reasonably priced for say a state orienteering organisation. There is also possibilities for free versions.

Open source PDFsamDocument

Frustrated at the limitations of Adobe Reader and can’t justify Adobe Acrobat? Then take a look at the open source PDFsam.

PDFsam Basic is free and enables split, merge, extract pages, rotate and mix PDF files.  PDFsam Enhanced comes in 3 flavours giving you even more options at a reasonable price.

QuestaBird

Your kids looking for something more to do while waiting for you to finish the course? Or vice versa? QuestaBird is a mobile based adventure game with a purpose. Use your phone to photograph birds, butterflies and moths,  competing with others to collect the most species and the greatest number of animals in your area.

“Players are not only learning about their environment, they’re collecting data that helps protect it.  In effect they have become citizen scientists without even knowing it.”

Andrew Robinson, co-founder of QuestaGame

Downunder geospatial awareness ratingsgeospatial

Australia is ranked 14th and New Zealand 25th in terms of geospatial industry awareness according to Geospatial Media & Communications.

Criteria are data infrastructure, policy framework, institutional capacity, user adoption levels, industry fabric (whatever that means).

The top 10 starts with USA, and apart from Singapore, China and Canada, comprises European countries.

Your dream mapping career?

If you ski you might have seen his work. Jim Niehues, The Man Behind The Map.


The featured image is a very small segment of the 1915 Victorian Geological Survey County of Gladstone map. The detail, drawing and printing is of the highest quality but unfortunately does not show up on this image.

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New OCAD Lidar Features Example

Cornish Hill lidar vegetation height image

ELVIS lidar data processed through OCAD 2018 DEM import

Mark Roberts recently reported

Just a note that I recently downloaded some lidar data from ELVIS and imported to OCAD 2018 and the results are spectacularly good. The vegetation height function depicts clearings and buildings perfectly:

OCAD 2018 import from ELVIS Lidar image
Mark’s OCAD 2018 import from ELVIS Lidar

Mark later remarked that lidar is becoming very readily available and the OCAD processing of lidar is so easy.

VIC lidar data processed through OCAD 2018 DEM import

Following Mark’s report I received ordered lidar data for a permanent orienteering course in Daylesford, VIC. Here in VIC we do not yet have free access, however on behalf of Orienteering Victoria I have established a protocol with DELWP for access to lidar data. As their paid orders take priority it takes some weeks to fulfill an order but the wait is certainly worthwhile.

I processed the ‘irregular points’ las files through OCAD 2018 DEM import wizard, selecting all options. This provided seven background images such as hill shading, slope gradient and hypsometric shading.

Continue reading New OCAD Lidar Features Example

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Australian Orienteer Summer Edition is Mapped

Geostationary Satellites

Orienteering map technology

The coming edition of the Australian Orienteer carries three articles relating to technology and orienteering maps. Continue reading Australian Orienteer Summer Edition is Mapped

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A Drone Goes Orienteering Mapping

Drone with camera

Drones in orienteering mapping?

This is not to claim that making orienteering maps is boring, as one dictionary suggests that a drone is  “A person who does tedious or menial work; a drudge” ….. on the contrary, anyone who knows me will know that I find the work stimulating and rewarding, and certainly not menial. Indeed making orienteering maps is one of my passions in life, and another (there are more!) is the theory of flight Continue reading A Drone Goes Orienteering Mapping

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ELVIS LiDAR data mapped via OCAD

ELVIS LiDAR and OCAD

The ELVIS output format Esri Ascii Grid, can be imported directly into OCAD 12 via the Import Wizard in the DEM menu. So you not only have an easy way of obtaining the data, you also have an easy way of using it. (See my earlier post ELVIS rocks with LiDAR contours on the basics of using ELVIS).

ELVIS LiDAR vs state geospatial vector contours

For a small area of Anglesea used in 2015 for a mountain bike orienteering event, I downloaded ELVIS LiDAR and VicMap vector contours. Then overlaid them in OCAD.

The brown contours are VicMap 10m obtained via download of vector form via Shape file.  25m index contours were also obtained but do not appear in this fragment.

The other 3 colours are from ELVIS LiDAR data;

  • grey is 1m (shown only in second image)
  • green is 5m
  • purple is 25m index contour

At first glance there is a general consistency if we ignore the many minor indentations in the LiDAR lines that could be easily smoothed in OCAD.

LiDAR 5m VicMap overlay

However the 1m LiDAR does indicate the existence of two lower parts of gullies that are shown in the VicMap contours, albeit the eastern displaced. So maybe 1m contours could usefully inform the mapper at draft stage in some map areas.ELVIS LiDAR vs VicMap vector

LiDAR contours smoothed via Karttapullauten

Karttapullauten generates orienteering training maps from LiDAR data.

This is similar to the result when smoothing in OCAD except that Karttapullauten has interpolated 2.5m contours (the dashed lines). Interestingly, this makes the progression of the above mentioned eastern gully much easier to observe.

LiDAR data smoothed in Karttapullauten

Using ELVIS DEM data in OCAD

There are 4 video tutorials on DEM at http://ocad.com/en/support/learn-video. These videos are useful for OCAD 10, 11 and 12 users.

I created a 4 minute video tutorial on the basics of using ELVIS. View it online at www.screencast.com/t/y3MTbMzzO

Following on from that is a  4 minute video showing the import of ELVIS DEM into OCAD via the DEM import wizard. (This is applicable for any DEM data). View it online at www.screencast.com/t/qBqaZrmu

Users of OCAD 10 and 11 don’t have the wizard but should be able to interpret the wizard settings.

And here is an OCAD template file I created to import the DEM data and then in turn it is imported into your OCAD map file with minimal symbology and colours.

TIPS

  1. When you download ELVIS data, it is the .asc file that OCAD DEM import wants,not the Shape file.
  2. If you get nothing showing after import, then check the .asc file content. You can use any text editor to read it. In the header lines there is a value for NODATA. If the file is composed completely of that value then there is no LiDAR data for the area you selected. ELVIS now warns you if there is no data in the selected area.
  3. When you are asked which co-ordinate set you wish to use, unless you have set up your OCAD file to match the location of the imported DEM data, then select the upper set which is that of the DEM data. Else the DEM data will likely be located far beyond the reach of your OCAD map area.
  4. If you expect to frequently use LiDAR data, then importing into a special OCAD file can be a boon, It should be empty and have just essential symbols that don’t clash with standard symbols for when you import that OCAD file into your working file. Such a template is downloadable from the section immediately above.