Re: [talk-au] Proposed import of SA waterbodies data

[Henry Haselgrove]

Hello,

I wanted to let you know that I have adjusted my plans based on feedback from 
this list and from the “imports” list. Here is a summary of the changes:

1.   I will tag all dams as water=reservoir instead of water=pond. Most 
existing dams in SA are tagged this way anyway. A dam seems to fit the 
definition of an OSM reservoir well.

2.   I have run the “SimplifyArea” JOSM plugin on all features. This 
reduces the total node count by 23%.

3.   I will not include any of the source tags. (I had been planning to 
keep FEATURECOD and OBJECTID from the source data).

I have made available an updated version of the .osm file that I plan to 
upload. There is a link to it on the wiki page ( 
https://wiki.openstreetmap.org/wiki/Import/South_Australian_Waterbodies ).

Any further feedback or comments would of course be welcome.

Thanks,

Henry

 

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Re: [talk-au] Proposed import of SA waterbodies data

[Henry Haselgrove]

Daniel,

 

The detail is very good. Here is a screenshot from JOSM:

https://drive.google.com/open?id=0B1JwNHL1bER0UzlIcFJzTmNFdms&authuser=0

The cyan lines are the datasa waterbodies, overlaid on an OSM map of Mount 
Barker. (By the way, this is showing part of the complete datasa waterbodies 
data, not the subset I’m proposing to upload.)

 

Importing the different types of features separately would be more technically 
difficult, because the different types of features share nodes where they touch 
each other. (It would be hard not to duplicate the nodes over the multiple 
uploads). But doing the largest objects first is definitely just as easy as 
what I’m proposing, so long as I include any features connected to those large 
objects at the same time.

 

I could include all the small unnamed dams. Perhaps they could be part of 
future stages of the import. My idea was to keep the first import relatively 
small, by including only the “important” features. I agree that my definition 
of important is fairly arbitrary, and I would be willing to change it. I’m a 
little bit scared by the fact that there are 90,000 dams in the dataset. I 
don’t want to be accused of spamming OSM!

 

Henry

 

From: Daniel O'Connor [mailto:daniel.ocon...@gmail.com] 
Sent: Tuesday, 20 January 2015 10:33 PM
To: Henry Haselgrove
Cc: talk-au@openstreetmap.org
Subject: Re: [talk-au] Proposed import of SA waterbodies data

 

Secondly, is it better to do 4x imports for each feature set; starting at the 
most high level feature layer?

 

I mean there are commonly things you just don't expect, so a trial run with 
large obvious features is probably best; pushing further into detail.

 

Third one; why just features with names?

Part of the motivation for mapping smaller dams has been for things like XPlane 
(realistic terrain); and excluding unnamed features would potentially make the 
data set less useful than it could be

 

On Wed, Jan 21, 2015 at 1:58 PM, Daniel O'Connor mailto:daniel.ocon...@gmail.com> > wrote:

What's the level of detail like for small bodies of water?

For example, I've put in some manual effort around small dams in places like 
http://www.openstreetmap.org/#map=14/-35.0894/138.8376 - i'd be curious to see 
a preview of this sort of area with the merged data.

 

On Wed, Jan 21, 2015 at 1:30 PM, Henry Haselgrove mailto:haselgr...@gmail.com> > wrote:

Hi All,

 

The South Australian government provides a dataset called “Waterbodies” on the 
website data.sa.gov.au <http://data.sa.gov.au> . 

It contains information about approximately 150,000 lakes, reservoirs, 
wetlands, and dams throughout the state (and in some margin around the state). 
The SA government gave explicit permission for data from data.sa.gov.au 
<http://data.sa.gov.au>  to be used in OSM.

 

I  have created the following wiki page to describe a plan I have to import 
some of the waterbodies data:

https://wiki.openstreetmap.org/wiki/Import/South_Australian_Waterbodies

 

Any feedback you have about the plan would be greatly appreciated!

 

Thanks,

 

Henry Haselgrove 

 

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Re: [talk-au] Proposed import of SA waterbodies data

[Warin]

On 21/01/2015 2:00 PM, Henry Haselgrove wrote:


Hi All,

I  have created the following wiki page to describe a plan I have to 
import some of the waterbodies data:


https://wiki.openstreetmap.org/wiki/Import/South_Australian_Waterbodies

Any feedback you have about the plan would be greatly appreciated!

Thanks,

Henry Haselgrove



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Consderation should be given to the following conversion to tags.

(Land - Subject to Inundation) ; flood_prone=yes rather than  
natural=wetland? depends on the place. There is also floodplain .. under 
discussion.
(Dam) natural=water ; water 
=reservoir 
 rather than 
water=pond ?  depends on area?


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Re: [talk-au] Proposed import of SA waterbodies data

[Daniel O'Connor]

Secondly, is it better to do 4x imports for each feature set; starting at
the most high level feature layer?

I mean there are commonly things you just don't expect, so a trial run with
large obvious features is probably best; pushing further into detail.

Third one; why just features with names?
Part of the motivation for mapping smaller dams has been for things like
XPlane (realistic terrain); and excluding unnamed features would
potentially make the data set less useful than it could be

On Wed, Jan 21, 2015 at 1:58 PM, Daniel O'Connor 
wrote:

> What's the level of detail like for small bodies of water?
>
> For example, I've put in some manual effort around small dams in places
> like http://www.openstreetmap.org/#map=14/-35.0894/138.8376 - i'd be
> curious to see a preview of this sort of area with the merged data.
>
> On Wed, Jan 21, 2015 at 1:30 PM, Henry Haselgrove 
> wrote:
>
>> Hi All,
>>
>>
>>
>> The South Australian government provides a dataset called “Waterbodies”
>> on the website data.sa.gov.au.
>>
>> It contains information about approximately 150,000 lakes, reservoirs,
>> wetlands, and dams throughout the state (and in some margin around the
>> state). The SA government gave explicit permission for data from
>> data.sa.gov.au to be used in OSM.
>>
>>
>>
>> I  have created the following wiki page to describe a plan I have to
>> import some of the waterbodies data:
>>
>> https://wiki.openstreetmap.org/wiki/Import/South_Australian_Waterbodies
>>
>>
>>
>> Any feedback you have about the plan would be greatly appreciated!
>>
>>
>>
>> Thanks,
>>
>>
>>
>> Henry Haselgrove
>>
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>>
>>
>
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Re: [talk-au] Proposed import of SA waterbodies data

[Daniel O'Connor]

What's the level of detail like for small bodies of water?

For example, I've put in some manual effort around small dams in places
like http://www.openstreetmap.org/#map=14/-35.0894/138.8376 - i'd be
curious to see a preview of this sort of area with the merged data.

On Wed, Jan 21, 2015 at 1:30 PM, Henry Haselgrove 
wrote:

> Hi All,
>
>
>
> The South Australian government provides a dataset called “Waterbodies” on
> the website data.sa.gov.au.
>
> It contains information about approximately 150,000 lakes, reservoirs,
> wetlands, and dams throughout the state (and in some margin around the
> state). The SA government gave explicit permission for data from
> data.sa.gov.au to be used in OSM.
>
>
>
> I  have created the following wiki page to describe a plan I have to
> import some of the waterbodies data:
>
> https://wiki.openstreetmap.org/wiki/Import/South_Australian_Waterbodies
>
>
>
> Any feedback you have about the plan would be greatly appreciated!
>
>
>
> Thanks,
>
>
>
> Henry Haselgrove
>
> ___
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> Talk-au@openstreetmap.org
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>
>
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[talk-au] Proposed import of SA waterbodies data

[Henry Haselgrove]

Hi All,

 

The South Australian government provides a dataset called "Waterbodies" on
the website data.sa.gov.au. 

It contains information about approximately 150,000 lakes, reservoirs,
wetlands, and dams throughout the state (and in some margin around the
state). The SA government gave explicit permission for data from
data.sa.gov.au to be used in OSM.

 

I  have created the following wiki page to describe a plan I have to import
some of the waterbodies data:

https://wiki.openstreetmap.org/wiki/Import/South_Australian_Waterbodies

 

Any feedback you have about the plan would be greatly appreciated!

 

Thanks,

 

Henry Haselgrove 

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