Changeset 85


Ignore:
Timestamp:
Oct 19, 2006, 9:43:32 PM (13 years ago)
Author:
Dominic Hargreaves
Message:

Style/grammar improvements.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/npemap.org.uk/static/FAQ.html

    r19 r85  
    11<html>
    22<head>
    3 <title>Free Postcodes!!!</title>
     3<title>Free Postcodes</title>
    44</head>
    55
     
    1111<h3>What is it?</h3>
    1212
    13 <p>There are a lot of uses on websites for being able to tell where
     13<p>There are a lot of applications on websites for being able to tell where
    1414people are from their postcode. For example "Where is my nearest
    1515B&amp;Q?". Unfortunately this data is expensive to licence (a few
    16 thousand pounds/year for a website I believe). <a
     16thousand pounds/year for a website). <a
    1717href="http://www.freethepostcode.org">Free the postcode</a> are doing a
    18 very good job, but it is hard to contribute to their database as you
    19 need a GPS so they have few postcodes.</p>
     18good job, but it is hard to contribute to their database as you
     19need a GPS, so they have few postcodes.</p>
    2020
    21 <p>The idea is to collect postcode data by getting users to locate
     21<p>Our goal is to collect postcode data by getting users to locate
    2222themselves on a map of the country. They need only give the first part
    2323of their postcode, and if we can collect locations for all of these
    24 parts then we can create a database that is 'good enough' for a lot of
    25 web purposes.
     24parts then we can create a database that is good enough for many
     25applications. We are also accepting complete postcodes and 'partial'
     26postcodes including the number portion of the second half of the postcode,
     27in order to improve our accuracy.
    2628</p>
    2729
    2830<h3>What licence will the data have?</h3>
    2931
    30 <p>It will be public domain. Users will have to place their data in the
    31 public domain. </p>
     32<p>The data will be will be in the public domain; consequently, users
     33submitting data agree to their submission being in the public domain
     34when they enter their postcode.</p>
    3235
     36<h3>What maps are you using?</h3>
    3337
    34 <h3>What maps will you use?</h3>
     38<p>We have scans of out of copyright OS maps of England and Wales.
     39You can <a href="scotlandAndNI.html">register interest in future
     40projects involving Scotland and Northern Ireland</a>.</p>
    3541
    36 <p>We have scans of out of copyright OS maps of the whole country.</p>
     42<h3>So can I do what I like with your scans/tiles?</h3>
     43
     44<p>
     45No. The scans and tiles have been placed under a
     46<a href="tileLicence.html">licence</a>; they are not in the public
     47domain.
     48</p>
    3749
    3850<h3>Isn't orthowotsiting an old map hard?</h3>
    3951
    4052<p>Luckily we're going to work in the OSGB coordinate system that
    41 matches up with the lines on the map, this means we don't have to
     53matches up with the grid lines on the map; this means we don't have to
    4254distort the maps too much. We also are not overly fussy about the
    4355accuracy, so this step can be done quickly.</p>
    4456
    4557<h3>Why don't you use maps created from <a
    46 href="http://www.openstreetmap.org">Openstreetmap</a> data?</h3>
     58href="http://www.openstreetmap.org">OpenStreetMap</a> data?</h3>
    4759
    4860<p>Because they are licensed under Creative Commons Share-alike
     
    5062
    5163<p>There are people who believe that locating a point on a map creates a
    52 derived work, and hence requires a licence. I don't want to be the first
    53 to prove them wrong in a court as that will be pricy.</p>
     64derived work, and hence requires a licence. We don't want to be the first
     65to prove them wrong in a court, as that will be pricy.</p>
     66
     67<p>Also, the OpenStreetMap maps are not yet complete enough to achieve our
     68goal of country-wide coverage</p>.
    5469
    5570<h3>Will this data be imported back into Free the Postcode?</h3>
    5671
    5772<p>It might be, that will depend on someone working out how to store
    58 partial postcode data in Free the Postcode.</p>
     73partial postcode data in Free the Postcode. We are importing Free the
     74Postcode data into our database.</p>
    5975
    6076<h3>If you are using scans of old maps, how accurate will the locations
    6177be?</h3>
    6278
    63 <p>Some of the scans are out by a degree or two but they are pretty
    64 good. We hope to be able to get better than 100yds accuracy out of it in
    65 the end. This is more than good enough to locate a reagion as large as
    66 the first half of a postcode. </p>
     79<p>Some of the scans are out by a degree or two but they are fairly
     80good. We hope to be able to get better than 100 metres accuracy out of it in
     81the end. This is more than good enough to locate a region as large as
     82the first half of a postcode, and hopefully as much as the 'partial'
     83postcodes described in the answer to 'What is it?' above.</p>
    6784
    6885<h3>My house isn't on a 1950s map</h3>
    6986
    70 <p>Find some local landmarks, guess where your house is. This is
    71 accurate enough for our purposes. </p>
     87<p>Find some local landmarks and guess where your house is. This is
     88accurate enough for our purposes.</p>
    7289
    7390<h3>I know exactly where I am, and what my postcode is</h3>
     
    7794world a better place.</p>
    7895
    79 
    80 <h3>Why doesn't it work yet?</h3>
    81 
    82 <p>We're still thinking about how this will work, and processing the
    83 maps so we can use them on the web.</p>
    84 
    85 <h3>So, how will I work it?</h3>
     96<h3>So, how do I use it?</h3>
    8697
    8798<p>Find your location on our map, click where your postcode is, enter
    8899the postcode, agreeing to release your data.</p>
    89100
    90 <h3>psst, I have a copy of the codepoint database wanna look?</h3>
     101<h3>Psst, I have a copy of the codepoint database. Wanna look?</h3>
    91102
    92103<p>No thanks, we want free data so we don't have to keep paying the nice
     
    95106<h3>Won't you drive codepoint out of business?</h3>
    96107
    97 <p>We don't think so, there are a lot of places where this level of
     108<p>We don't think so. There are a lot of places where this level of
    98109accuracy just isn't enough. Those people will still have to pay until
    99110<a href="http://www.freethepostcode.org">Free the Postcode</a> improves
     
    102113<h3>The map doesn't join up.</h3>
    103114
    104 <p>Yeah, it isn't perfect, the OS didn't publish a single map of the whole
    105 country so you have to scan then stick together data from several maps. I don't
    106 really know how to correct it perfectly. It would be really cool if someone
    107 could write software to detect the gridlines and automatically cut the images
    108 up on the lines and make them square.</p>
     115<p>Yes, it isn't perfect. The OS didn't publish a single map of the whole
     116country, so you have to scan then stick together data from several maps.
     117We don't really know how to correct it perfectly. It would be really cool
     118if someone could write software to detect the gridlines and automatically
     119cut the images up on the lines and make them square.</p>
    109120
    110121<h3>The wonkiness is so annoying it drives me mad, and I have experience of orthrectifying maps. Please let me straighten your maps.</h3>
    111122
    112 <p>Cool. Contact us that would be great.</p>
     123<p>Cool. Contact us, that would be great.</p>
    113124
    114125<h3>Why didn't you use proj/gdal?</h3>
    115126
    116 <p>Because I don't know how to work them. Feel like improving how this works, let me know.</p>
     127<p>Because we don't know how to work them. If you feel like improving how this
     128works, let us know.</p>
    117129
    118130<h3>Why don't you have good mapping data of Scotland and Northern Ireland?</h3>
    119131
    120 <p>I don't think they were part of the new popular edition at 1inch to the mile. If you have free higher res images of either of these places (we only have quarter inch to the mile) then we might be interested in them.</p>
     132<p>I don't think they were part of the New Popular Edition at 1 inch to the
     133mile. If you have free higher resolution images of either of these places
     134(we only have quarter inch to the mile) then we might be interested in them.</p>
    121135
    122136<h3>Who did the work?</h3>
    123137
    124 
    125138<p>
    126 <ul><li>Richard Fairhurst acquired and scanned the maps, </li>
     139<ul>
     140<li>Richard Fairhurst acquired and scanned the maps,</li>
    127141<li>Dominic Hargreaves and David Sheldon straightened and tiled the maps,</li>
    128 <li>Matthew Westcott, David Sheldon, Dominic Hargreaves and Nick Burch worked on the user interface,</li>
     142<li>Matthew Westcott, David Sheldon, Dominic Hargreaves and Nick Burch worked on the user interface.</li>
    129143<ul>
    130144</body>
Note: See TracChangeset for help on using the changeset viewer.