TASMAP Frequently Asked Questions

​​​​​​​​How can I search on the TASMAP eShop?

You can search for products via the TASMAP web page using the search form located on the left side of many of theTASMAP pages. The search form allows users to search on keywords including map names, product descriptions, barcode numbers and map numbers. You can also search for maps based on locality or suburb names.

For Instance if you search on the keyword "hobart" all the maps that have the keyword hobart in their description will be returned along with all the maps that are wholly or partially over the Hobart suburb. Note that searching is not case sensitive.

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TASMAP mapping indexes now on LISTmap

Land Tasmania has enhanced LISTmap to enable users to navigate to the mapping products directly from the map indexes available on LISTmap. Available for the National Park Map Index and the 1:25,000, 1:50,000, 1:100,000 & 1:250,000 Topographic Indexes, they link through to the TASMAP eShop where each product is available for purchase as either a hard-copy map or digital product.

 
The layers are all publicly available in LISTmap using the “Layers → Add Layer” button then navigating to the categories “Imagery and Maps → Map Indexes” in the “Manage Layers” popup box.

 
To view the links to the TASMAP products, single click on the desired map index and then click on “View Link” next to either the “TASMAP Topographic Map” or the “TASMAP Digital Map” fields. The links will take the user to the corresponding TASMAP web pages.

 


 

​​​​​​​​Can I purchase digital TASMAP products?

Tasmap has recently introduced close to 470 Digital maps for sale.  Versions of all TASMAP's series mapping products, including the 1:25,000, 1:50,000, 1:100,000 1:250,000, Visitors Map and National Park and Recreation maps are now available.  These provide suitable formats for mobile devices, GPS and GIS applications, and a KMZ file which will open directly in Google Earth.

Go to www.tasmap.tas.gov.au for more details

TASMAP series maps (1:25,000, 1:100,000 1:250,000) and the Tasmanian Towns Street Atlas are also available digitally as geotiff raster images on CD. For information on costs, see the Price Guide​. This document details costs and how to purchase digital copies of map coverages made and distributed by TASMAP.​


 

What digital TASMAP products are available to purchase?

TASMAP have released over 470 digital maps for sale, these products are all available NOW for purchase from the TASMAP eshop.

The new 1:50 000 Topographic Map series 50 products to date (August 2016)​.

The complete 1:25 000 Topographic/Cadastral Map series 414 products.

The complete 1:100 000 Topographic Map series 40 products.

The complete 1:250 000 Topographic Map series 4 products.

The complete National Park, Walk & Recreation Map series 16 products.


 

How do I add a product to my cart on the TASMAP eShop?

Select the type of map you need by either using the Search Products menu or by selecting from the menu on the left side of your browser, ie National Park, Walk and Recreation Digital Maps, which will take you to the map selection page where you can choose your products either through the graphical interface or a textual list.


If you are sure of the product you want to buy you can add it straight to the cart from this page by adding the amount of maps you require in the text box to the right of the map price column and click on Add.


 


 


 

You can have a closer look at the product by clicking on either the map cover, the map name or by selecting from the graphic index above. This page gives you specific information about the selected product and if you want be 100% sure about what you are purchasing there is a thumbnail available for viewing the actual map content at a lower resolution. To add a product to your cart simply click on the Add to Cart button after selecting the number of maps required.

Product Page NP
 


 


 


 


 


 


 


 


 

How do I purchase and download my digital map?

Once you have logged in, chosen your required maps and payed through the CHECKOUT tab on the webpage, your digital products will be available from the MY DOWNLOADS tab, located on the top menu bar.


​You will be able to see all the purchased maps and have the option to download each by clicking on the Download button to the right of the product. This will then download a .zip file to your selected location.


For each series mapping product purchased (1:25 000, 1:100 000, 1:250 000) you will receive a GeoTIFF and KMZ for download, while for the 1:50 000 and National Park Walk and Recreation maps you also receive a GeoPDF in addition.

As well as being used within mobile devices, GeoTIFFs can also be imported into any GIS packages such as ArcMap or Mapinfo.


 

How do I load a GeoPDF or GeoTIFF into my mobile device?

To utilise a GeoPDF or GeoTIFF on a smartphone or tablet there are many applications on the market that will enable this. One option is by using the after-market PDF Maps app which is a free download from the App or Play Store.


 

 

Once you have an app installed on your device it is easy to transfer TASMAP products to your device either through ITunes, Dropbox or any file manager program.

For example using ITunes it is just a matter of plugging your device into your computer and dropping the map you want to load on to your device into the File Sharing area in ITunes.

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Once you have maps loaded they will appear in the maps list in the app on your device along with the distance the area on the map is from where you are actually standing (if location is enabled on your phone). You simply click on the map you want to view and it appears on the screen. You will see it shows the co-ordinates of the spot you are looking at and if you are actually standing in the map coverage you can hit the button (Either resembles a crosshair or an arrow, depending on version) and it will locate you on the map. You can also add waypoints, geotagged photos and record GPS tracks as you move around.


 

How do I use the KMZ file within Google Earth?

The KMZ files can be dropped straight into Google Earth by simply double clicking the file once downloaded. The map will automatically locate itself and you can zoom, rotate, change your point of view and add transparency.​


I would like to purchase a customised map, how do I go about this?

If you can’t find a product suitable for your needs from our TASMAP eShop, we also offer a custom mapping service to produce specific maps needed for reports, research, brochures or websites.  Email the details of your request to TASMAP using the tasmap@dpipwe.tas.gov.au​ email address and we will provide you with a quote.

 

How can I convert Geographical coordinates (latitude/longitude) to Grid coordinates (easting/northing) and vice versa?

Two converters are available on the Geoscience Australia website for this purpose (use zone 55 for Tasmania):

From Geographic to Grid: http://www.ga.gov.au/geodesy/datums/redfearn_geo_to_grid.jsp

From Grid to Geographic: http://www.ga.gov.au/geodesy/datums/redfearn_grid_to_geo.jsp


How do I subscribe to notifications about TASMAP news and new products?

There are two options:
  • Like TASMAP on facebook to be kept up to date with the latest news and information, or​
  • Subscribe to the TASMAP news page which provides an RSS (Rich Site Summary) feed of all the latest news in relation to TASMAP and our products. There are a variety of ways to subscribe to RSS feeds and more information on how to do this is available here.

What datum should I input into my GPS unit?

Refer to horizontal datum indicated within the map legend. Depending on the map this should be either the Australian Geodetic Datum 1966 (AGD66) or the Geocentric Datum of Australia 1994 (GDA94). Note in some GPS systems GDA94 is not an option, in this case use the World Geodetic System 1984 (WGS84). You will also need to set the position format to either UTM (Standard Map Grid) or Latitude/Longitude (Degrees, Minutes and Seconds). Note on some GPS units Latitude/Longitude may be shown as ddd°mm'sss" (or something similar).

What is a map datum?

​A map datum defines a mathematical surface and the origin point for the coordinate system that is used to depict the location objects on the surface of the Earth.

TASMAP products are based on two different horizontal datums, depending on the date of publication. All new maps published after 31 March 2003 are based on the Geocentric Datum of Australia 1994 (GDA94). All maps published prior to that date, are based on the Australian Geodetic Datum 1966 (AGD66).​

The primary reasons for making the change to GDA94 are:

  • It is compatible with the datum used by global navigation systems, such as the WGS84 datum used by the Global Positioning System (GPS).
  • It is compatible with national mapping activities, such as hydrographic charting, which are also based on WGS84.
It provides a single standard for the storage, management, analysis and display of spatial information throughout Australia.

How does GDA94 differ from AGD66?

The GDA94 datum best fits the shape of the earth as a whole with its origin at the Earth's centre of mass, hence the term "geocentric". The AGD66 datum defines a shape that suits the Australian region, with an origin that does not coincide with the centre of the Earth, this is a non-geocentric datum.

Because the datums have different origin points, GDA94 and AGD66 coordinates differ by approximately 200 metres in Tasmania


How does the change to GDA94 affect maps?

The change shows as a shift in the position of the grid lines and a corresponding change in the coordinates of map features. The amount of this shift will vary according to the scale of the map.

​Map Scale
​Shift (mm)
​1:25,000​8
1:100,000​2
1:250,0000.8

Because map borders are based on grid coordinates they will also shift, hence GDA94 borders do not abut adjacent AGD66 borders. In the case of TASMAP 1:25,000 and 1:100,000 series maps, the area covered by GDA94 maps has been extended so its borders will abut the adjacent AGD66 map and there will be no gap. Alignment marks have been provided to assist the task of joining AGD66 and GDA94 maps together.


How do I know which datum a map is based on?

All TASMAP products state the datum in the border information. GDA94 maps are readily identifiable because the GDA logo is printed on the cover and near the datum statement in the border information. In the case of 1:25,000 series maps, the map cover is predominantly blue while the cover of AGD66 maps is predominantly yellow.

How do I convert coordinates from one datum to another?

For map reading purposes, the following conversion values can be used throughout Tasmania.

AGD66 to GDA94GDA94 to AGD66
LatitudeDecrease by 5.4 secondsIncrease by 5.4 seconds
LongitudeIncrease by 4.8 secondsDecrease by 4.8 seconds
EastingIncrease by 112 metresDecrease by 112 metres
NorthingIncrease by 183 metresDecrease by 183 metres​

How will the change to GDA94 affect navigation?

The change will not be noticeable if you are using basic navigation techniques. These include identifying your position by referring to map features, and using a magnetic compass to determine your position or follow a route.

If you are using a GPS receiver in conjunction with a map you must note which datum the map is based on and set it in the receiver. If the map is based on GDA94 and this datum is not available your receiver, set it to WGS84. For map reading and navigation purposes, WGS84 can be regarded as identical to GDA94.

If you are plotting or quoting grid coordinates or grid references for map features or waypoints, it is important to note which datum they relate to, so they can be accurately positioned on maps based on either datum.

Will the change to GDA94 affect contours and heights?

No. The datum used for heights has not changed. It remains the Australian Height Datum (Tasmania) which is based on mean sea level.

What is GDA2020 and how will it affect me?

​To keep up with modern technology and the increasing demands for accuracy of today's society, Australia is modernising its Datum. To learn more about GDA2020 go to ​the Datum Modernisation webpage​

How can I discover and purchase Tasmanian Aerial Photography?

Details relating to availability and purchasing of aerial photography in Tasmania​ are available through the Aerial Photography web page​.

 
How can I use a copy of a TASMAP product in a publication?

 
Contact geodata.clientservices@dpipwe.tas.gov.au with details of your request. TASMAP products are protected by the provisions of the Copyright Act 1968. See Copyright Information for more details.


 


 

Contact

TASMAP
134 Macquarie Street
Hobart TAS 7000
Phone: 03 6165 4444, then press Option 3
Email: tasmap@dpipwe.tas.gov.au
Website: http://www.tasmap.tas.gov.au

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