HDTenEightyP/NetNews huggingface dataset:
Via: uk.ac.york.vaxa; Tue, 17 Nov 1992 16:16:18 +0000
Newsgroups: comp.infosystems.gis
Date:         Tue, 17 Nov 1992 16:13:00 GMT
              <GIS-L@UBVM.BITNET>
From:         Loki <APM9@VAXA.YORK.AC.UK>
Subject:      RE: gps and street mapping

Hi.  I am currently working on a PhD project looking at the mapping
(and modelling in the missing bits!) of subsurface archaeological deposits
in the city of York (UK).
For much of the work I would like to do, a DECENT DTM of the modern ground
surface would be useful.
The Ordnance Survey produce a DTM for the city but it is one of their
"If you need to ask the cost, you can't afford it" type products, well
beyond the meagre funds of a University Archaeology Department.

As I see it, there are three options (thanks for the suggestions, Peter Halls!)
open to me, and any comments from the net on them would be appreciated...

The area of York currently under study is about 2km*1.5km although I may
expand to cover the rest of the local authority area (c. 7km*7km) at a
later date.  The model would be used in the generation of depth of deposit
maps, and simulated ground surfaces for the city at different periods (the
change in height can be as much as 12m in some areas of the city in the past
2000 years) so I would need a pretty accurate (about 0.2m MAXIMUM error in
z values) DTM initially.

The options open are:

(i)	Hire a total station, and trot around the streets of York, dodging
	hoards of tourists and Christmas shoppers (electric fence and/or
	weapons may be required to keep tourists from knocking station!)
(ii)	Purchase SPOT image of the city, and generate DTM from there through
	GRASS
(iii)	Hire GPS (multiple units?) and create DTM using them and multiple fixed
	base stations.

Any thoughts on cost/feasibility/accuracy of any of the above greatly
appreciated...

Thanks a lot


Paul Miller
York Archaeological Assessment		e-mail	apm9@vaxa.york.ac.uk
Department of Archaeology		tel	+44 223 636731
University of York		OOPS!	tel	+44 904 636731
Micklegate House
88 Micklegate
York
YO1 1JZ
UK

ps:	First telephone number is wrong! Sorry!!!!
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Newsgroups: comp.infosystems.gis
Date:         Wed, 18 Nov 1992 15:42:00 EST
From:         THE IDRISI PROJECT <IDRISI@CLARKU.BITNET>
Subject:      Re: UNLDST?

Darius,

Do you have any information about the UNLDST format itself that might help us
to figure out what would be involved in bringing it into IDRISI?  You can
reply to me personally, if you want.

Tammy Woodard
Idrisi Project
idrisi@vax.clarku.edu
idrisi@clarku.bitnet
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Newsgroups: comp.infosystems.gis
Date:         Mon, 16 Nov 1992 09:45:00 GMT
              <GIS-L@UBVM.BITNET>
From:         STGG8004@IRUCCVAX.UCC.IE
Subject:      Re: Pricing of digital map products

>      Is this a problem that is peculiar to Britain (including Darius, in
> Ireland) - or is this now a truly world-wide problem?  It would be comforting
> to know, one way or another, which other countries treat education and researc
   h
> in the same way as commerce - and which (if any) regard their academic
> communities as being a 'special case'.

Related to this, I would be interested to know what sort of "units" are
generally used to measure the digital data being charged for? In the U.K.
for example, are data charged for simply on the basis of the numbers of
bytes involved? Or is charging on the basis of geographical area? Number
of entity classes (roads, contours, etc.) included in the data set? Or
what? Would the charge for x Mbytes of data for some very remote area of
the Scottish Highlands (say) be the same as the same x Mbytes of data
covering an area of central London? If I wanted just the road network
for a 5 x 5 km area, would I be charged the same as for the elevation data
for the same area?

(There was always a problem with the charging for analogue large-scale maps,
of course: a 1:10,000 map of parts of Scotland or Wales might only have a
half-dozen houses on it, and the cost of creating the map could easilly be
more than the most optimistic hopes of recovering those costs through sales
of that particular sheet. Thus the cost of compiling the map had to be
absorbed through more profitable sales of other sheets in the series.
Similar constraints presumably apply to digital data...?).

Darius Bartlett
Newsgroups: comp.infosystems.gis
From: bwallet@apssgi.nswc.navy.mil (Brad Wallet)
Subject: Re: Remote Sensing List Server
Organization: Naval Surface Warfare Center
Date: Thu, 19 Nov 1992 16:19:38 GMT

In article <9211191440.AA18384@sparkie.nrri.umn.edu>, pwolter@SPARKIE.NRRI.UMN.EDU (Pete Wolter) writes:
|> There is no doubt that the GIS-L server is a valuable reference for GIS folks.
|> 
|> What I would like to know is does a similar service exhists for REMOTE
|> SENSING topics??  If anyone knows please list.
|> 
|> Thanks
|> 
|> ----------------------------------------------------------------------------
|> Peter T. Wolter                       Internet: pwolter@sparkie.nrri.umn.edu
|> Natural Resources Research Institue   Telephone: (218) 720-4275
|> University of Minnesota, Duluth       Facsimile: (218) 720-4219
|> ----------------------------------------------------------------------------
|> "If I knew what I was doing it wouldn't be research"

Yes, IMAGRS-L.

Brad
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Newsgroups: comp.infosystems.gis
Date:         Fri, 20 Nov 1992 09:56:57 -0800
From:         Jerry Davis <jerry@GISLAB.SFSU.EDU>
Subject:      tidal marsh habitat modeling

The following is a message from a graduate student looking for others doing
similar work.  I'll let him explain.  Please respond either to Dan directly at
scalon@gislab.sfsu.edu or to me at jerry@gislab.sfsu.edu.

- Jerry Davis, San Franciscso State University, Geography

----------------------------------------------------------------------

Conservation Biology-minded GIS Users:

I am soliciting input on GIS methodologies or techniques for analysing
bird dispersal in a highly fragmented habitat.  With digitized habitat
parcels of varying shapes and sizes  statistical analysis of  bird dispersal
success will be used to determine the potential risk which may result from
inbreeding a lack of genetic diversity.

The Suisun Song Sparrow is a non-migratory bird which inhabits the
brackish tidal marshes in Suisun Bay and Suisun Marsh, between San Francisco
Bay and the Sacramento/San Joaquin Delta.  The tidal marsh habitat has been
reduced by 90% over the past 150 years,  but the impact on the  sub-species
survival has not been quantified.

The application of GIS to this problem to date has involved producing a
single coverage of tidal marsh habitat parcels.  A database structure has
been created which stores a habitat type descriptor, bird population  density,
and distance to the nearest neighboring parcel of habitat.  The process of
analysing this data will involve writing a computer simulation program which
will simulate bird dispersal events based on known variables such as maximum
population density, fledgling rate, and dispersal distance.  Success or
failure of dispersal will be determined based on the proximity of neighboring
habitat parcels.  The final result will be an overall risk assessment for
individual populations and the entire sub-species metapopulation.

Any comments on the proposed GIS application as a whole, specific techniques,
or references to related projects would be greatly appreciated.

Regards,


Dan Scollon
Geography Graduate Student,
San Francisco State University

scalon@gislab.sfsu.edu
From: reiniger@ug.cs.dal.ca (Darren Reiniger)
Newsgroups: comp.infosystems.gis
Subject: SPADS?
Summary: Anyone heard of it?
Date: 16 Nov 92 17:04:49 GMT
Organization: Math, Stats & CS, Dalhousie University, Halifax, NS, Canada


  This is a shot in the dark, but I'm hoping someone can help me.  I
  received a request from a friend in Italy who is searching for a GIS
  software product called SPADS (Spatial Analysis Data System).
  Has anyone heard on this product, and if so, might know where I could
  get more information about it?

 Thanks,
   Darren

-- 

 Darren Reiniger                   reiniger@ug.cs.dal.ca || arishem@ac.dal.ca
| People who wonder where this generation is going should remind themselves   |
| where it came from in the first place.                                      |
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Newsgroups: comp.infosystems.gis
Date:         Thu, 19 Nov 1992 21:08:00 EST
From:         AANYAMBA@CLARKU.BITNET
Subject:      Re: HELP ... Kenyan data sought ....

reply
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Via:      UK.AC.ED.GEOVAX; 19 NOV 92 19:20:34 GMT
Newsgroups: comp.infosystems.gis
Date:         Thu, 19 Nov 1992 19:21:07 GMT
From:         NCC@GEOVAX.ED.AC.UK
Subject:      Apology for Delay

Dear All,

Just a quick apology to those of you who asked me for further info
about our various digital data sets. We ran out of brochures but a
new stock has now been delivered so they should be on their way soon.
Any problems please let me know and I will chase up the relevant
people.

Many thanks,

Tim Rideout,
Data Sales Support Analyst
Bartholomew,
12 Duncan Street,
Edinburgh EH9 1TA,
Scotland, Europe.
Newsgroups: comp.infosystems.gis
From: dmarble@magnus.acs.ohio-state.edu (Duane F Marble)
Subject: Re: ISBN for Laurini & Thompson's Fundamentals of GIS?
Organization: The Ohio State University
Date: Wed, 18 Nov 1992 13:16:26 GMT

The electronic text is an interesting idea. However writing any text
(electronic or not) involves a substantial level of effort. At least
in U.S. universities the traditional printed version would create at
least some brownie points for promotion and tenure. An electronic
version would not. This institutional problem would tend to inhibit
movement in the direction suggested.
-- 
Duane F. Marble			       E-mail: dmarble@magnus.acs.osu.edu
Department of Geography                Telephone: (614) 292-2250
The Ohio State University
Columbus, Ohio 43210                   Fax: (614) 292-6213
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Newsgroups: comp.infosystems.gis
Date:         Thu, 19 Nov 1992 05:17:36 EST
From:         Mutahar Hickey <mhick@BSU-CS.BSU.EDU>
Subject:      Re: ISBN for Laurini & Thompson's Fundamentals of GIS?

M:Duane F. Marble                        E-mail: dmarble@magnus.acs.osu.edu
wrote:
M:The electronic text is an interesting idea. ...  An electronic
M:version would not. This institutional problem would tend to inhibit
M:movement in the direction suggested.
M:
Duane is right here, but I checked with my administration:  the
requirement here is that the "publication" be reviewed by "Peers" in such
a way that many people can know about the publication.   This could happen
for an electronic text.  The growth of hypertext will require this in any
case in the immediate future -- hypertext cannot be printed in any
intelligible way.  But this is a way for some GIS professor to get some
funding from National Science Foundation and National Education... which
could mean new GIS equipment for his department if his grant requests were
worded correctly.  Excuse me, this is not really a GIS topic.

                                Mutahar

        **********************************************************************
        ***     Mutahar Hickey      Graduate Student    Ball State University **
*
        ***  (317)282-4509           Computer Science       Muncie, Indiana    *
**
        ***      EMAIL:        mhick@bsu-cs.bsu.edu                47306
 ***
        **********************************************************************
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Newsgroups: comp.infosystems.gis
Date:         Sun, 15 Nov 1992 21:46:27 -0600
              <GIS-L@UBVM.BITNET>
From:         PRABHAKAR <SL80L@USU.BITNET>
Subject:      How to extract TIGER files?

Hi,
   I have U.S zip code database files (zip_90.arc;zip_905.arc etc.,)with me
   and i  want to build a databse consisting of network and census records
   using TransCAD . I could not extract the TIGER files(9005.f21 & 9005.f22
   which i need) from the zip code boundary database files.Can some one help
   me how to extract the TIGER files from the zip code boundary databse or
   from the zip code centroid database.Can I import these files directly in
   to the software to build a database?I dearchived the zip code boundary
      database files in to the directory in the drive but could not extract the
   requisite files from them.

  Please forward your replies to the following address;
  sl80l@cc.usu.edu
  Thanks in advance
  Prabhakar.A
Newsgroups: comp.infosystems.gis
From: meij@pop.psu.edu (Hendrik K. Meij)
Subject: Re: Map based emergency response system
Organization: Penn State Population Research Institute
Date: Tue, 17 Nov 92 17:34:41 GMT

For those of you questioning TIGER, I refer you to the manuals enclosed with
the CD version:

                   II.   THE TIGER SYSTEM:   AN OVERVIEW


The U.S. Bureau of the Census, in cooperation with the U.S. Geological
Survey (USGS), developed a major new computer-readable geographic data base
for the United States and its possessions.  The primary sources of the data
base were the USGS 1:100,000-scale maps and the Census Bureau's 1980
GBF/DIME-Files.  The USGS compiled the 1:100,000-scale maps from
photographically reduced (to 1:100,000-scale) mosaicked 1:24,000-scale
maps.  The USGS 1:100,000-scale maps meet national map accuracy standards
and uses coordinates defined by the North American Datum, 1927 (see
reference McKenzie and LaMacchia, 1987).  For the lower 48 States, the
cartographic quality of most of the 1990 Census TIGER/Line files, in areas
outside the 1980 census GBF/DIME-File coverage and selected other large
metropolitan areas, compares favorably with the USGS 1:100,000-scale maps.
These geographic/cartographic files are excellent as a base for a
geographic information system (GIS) but are not recommended for detailed
                                            ^^^^^^^^^^^^^^^
applications requiring higher positional accuracy. 


-Henk



-=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=-

  * * * * * * * *   Hendrik K. Meij
  *             *
  * Penn  State *
  *             *   The Population Research Institute - Penn State University
  *   1 8 5 5   *   ---------------------------------------------------------
  *             *   meij@pop.psu.edu                             814-863-7375
   *           *
     *       *      22 Burrowes Building
         *          University Park, PA 16802

-=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=-

-- 

-=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=- -=-

  * * * * * * * *   Hendrik K. Meij
Newsgroups: comp.infosystems.gis
Subject: Re: GIS textbooks
From: "(Andrew U. Frank)" <frank@MECAN1.MAINE.EDU>
Date: Sun, 15 Nov 1992 12:55:23 +0100
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I would recommend Laurini and Thompson: fundamentals of GIS.
It is not perfect (but which textbook is ever perfect), but it is
definitely much more modern and reasonably complete.

-----------------------------------------------------------------------
Andrew U. Frank                          email:    frank@mecan1.maine.edu
Geoinformation E127.1                    office:   +43 1 588 01 3786
Technical University Vienna TU           secr.:    +43 1 588 01 3787
Gusshausstrasse 27-29                    fax:      +43 1 504 3535
A-1040 Vienna (Austria)
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Date:         Mon, 16 Nov 1992 09:11:50 EST
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From:         Neel Smith <nsmith@POLAR.BOWDOIN.EDU>
Subject:      Scale of problems?

The current thread on pricing of digital data suggests that it is not
easy for academics with limited funding to get access to coverage of
very large areas:  are pricing policies limiting the scale of problems
GIS research is addressing today ?

I would be very interested in learning what are the largest areas
people are looking at in their research, and what kinds of data they
are using.  Are people actively working on problems bigger than, say,
a single Ordinance Survey sheet (and smaller than DCW!) ?

Neel Smith
nsmith@polar.bowdoin.edu
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Newsgroups: comp.infosystems.gis
Date:         Fri, 20 Nov 1992 19:51:00 PST
From:         Chris Hermansen <clh@TFIC.BC.CA>
Subject:      Re: Map based emergency response system

Larry Lewis writes;

>
>If all or most of the GPS satillites are up, I find it hard to believe that
>mountains would affect the signal if the receiver had multiple channels.

Believe it!  You ought to see *our* fjords sometime.

>
>As the influence of high buildings on GPS signals, I would be interested to
>hear more.

Me too.

Chris Hermansen                         Timberline Forest Inventory Consultants
Voice: 1 604 733 0731                   302 - 958 West 8th Avenue
FAX:   1 604 733 0634                   Vancouver B.C. CANADA
clh@tfic.bc.ca                          V5Z 1E5

C'est ma facon de parler.
Newsgroups: comp.infosystems.gis
From: sprent@sol.surv.utas.edu.au (Tony Sprent)
Subject: Re:      RE: gps and street mapping
Organization: University of Tasmania
Date: Thu, 19 Nov 1992 04:41:40 GMT

In article <GIS-L%92111720145050@UBVM.CC.BUFFALO.EDU>,         Loki <APM9@VAXA.YORK.AC.UK> writes:
>> 
> The options open are:
> 
> (i)	Hire a total station, and trot around the streets of York, dodging
> 	hoards of tourists and Christmas shoppers (electric fence and/or
> 	weapons may be required to keep tourists from knocking station!)
> (ii)	Purchase SPOT image of the city, and generate DTM from there through
> 	GRASS
> (iii)	Hire GPS (multiple units?) and create DTM using them and multiple fixed
> 	base stations.
> 
> Any thoughts on cost/feasibility/accuracy of any of the above greatly
> appreciated...
> 
>> 

Using a single GPS receiver you are not going to get XY position to better than
between 20 and 200 metres depending on whether the American Defence people are
invoking Selective Availability. With a pair of low cost C/A receivers that
are able to log data and provided you have the necessary software to carry out 
differential processing you will be able to get around 2-5 metres in XY and 
a bit worse in Z.

With more expensive receivers able to record and process data in rapid-static mode 
you should be able to obtain XY and Z position to a few cms. This last option would
give you the required precision but it is not cheap. Sorry I cannot give you costs 
but if you contact one of the instrument hirers they would be able to provide the info.

I think I would see first if anyone else has carried out surveys in the area first and
see if you can beg, borrow or steal their data.

Good luck

 ________________________________________________________
| Tony Sprent                                             |
| Department of Surveying and Spatial Information Science | 
| University of Tasmania                                  |     
| GPO Box 252C Hobart        _--_|\                       |
| Tasmania                  /      \                      |
| Australia   7001          \_.--._/   )                  |
|                                    /                   |                                       
| Phone 61-02-202110 Fax 61-02-240282  International      |   
|         002-202110       002-240282  Australia          | 
| email  sprent@surv.utas.edu.au                          | 
|_________________________________________________________|
From: pwolter@SPARKIE.NRRI.UMN.EDU (Pete Wolter)
Newsgroups: comp.infosystems.gis
Subject: Remote Sensing List Service
Date: 18 Nov 92 18:24:18 GMT
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It is well known that the GIS-L is a terrific reference for GIS folks...

I would like to know if such a service exhists for REMOTE SENSING topics??


----------------------------------------------------------------------------
Peter T. Wolter                       Internet: pwolter@sparkie.nrri.umn.edu
Natural Resources Research Institue   Telephone: (218) 720-4275
University of Minnesota, Duluth       Facsimile: (218) 720-4219
----------------------------------------------------------------------------
"If I knew what I was doing it wouldn't be research"
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Date:         Thu, 19 Nov 1992 21:50:43 -0500
From:         Pip Forer <pip@GEOG.CANTERBURY.AC.NZ>
Subject:      Re: Educational discounts

This is a general question with a specific point, or perhaps vice versa.

Specifically we are interested in what are the known educational discounts, in
 different regions , on Magellan 5000 equipment, particularly the receiver and
 the software upgrade for 1m differential correction. ( direct answers
 appreciated... I'll collate if worthwhile )

The background is that we became a Magellan site through direct purchase from
 the US,  but now find a local distribution system is intervening.
 Coincidentally the educational discount dropped to 15%, a drop of the
 proverbial 10%.

Our experience is the common one that the longer the chain the harder it is to
 find out what really is 'central' corporate policy with regards university
 support. This seems particularly true in small markets. Hence the general
 question, which is not irrelevant to the ongoing thread on digital data costs
 and the political economy of promoting GIS. Is there a global systematic
 pattern of discounted costs for GIS in education? As a periphery dweller and
 geographer I'd really love to know a) when differential service exists and b)
 whether it is due to i) corporate policy ( global capitalism ), ii) distance
 decay ( mother nature ) or iii) organisational structure ( intervening
 opportunity aka taking a cut ).

Intellectually it's an interesting question ; financially its riveting. Data,
 anecdotal or hard and preferably flame-proof, would be welcome


Pip Forer, Geography, University of Canterbury, Christchurch, New Zealand
pip@geog.canterbury.ac.nz
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Date:         Mon, 16 Nov 1992 22:43:00 CST
              <GIS-L@UBVM.BITNET>
From:         CHUNGR@ISCSVAX.UNI.EDU
Subject:      Re: ISBN for Laurini & Thompson's Fundamentals of GIS?

To: Duane Marble
What would you use as text or texts for a second course for those 50 students
in your introductory course?
        Roy Chung (Chungr@uni.edu)
        Geogrpaphy Dept, Univ. of Northern Iowa,
        Cedar Falls, IA 50614-0406