<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">Not at the moment, but I’ve had requests for some different kinds of accessors, like </div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">PC_Get(pcpoint, ARRAY[text]) -> ARRAY[double]</div> <div id="bloop_sign_1416285543226777088" class="bloop_sign">
<title></title>
<div>
<br>
</div><div>Or even </div><div><br></div><div>PC_Get(pcpatch, text) -> ARRAY[double]</div><div><br></div><div>Or (and i wonder if this is wise)</div><div><br></div><div><div>PC_Get(pcpatch, ARRAY[text]) -> ARRAY[ARRAY[double]]</div></div><div><br></div><div>Do you have any interest in that kind of thing?</div><div><br></div>
-- <br>
Paul Ramsey<br>
http://cleverelephant.ca<div>http://postgis.net
</div>
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"url": "http://www.example.com",
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</div> <br><p style="color:#000;">On November 17, 2014 at 7:49:48 PM, Ashley Mort (<a href="mailto:ashley_c_mort@raytheon.com">ashley_c_mort@raytheon.com</a>) wrote:</p> <blockquote type="cite" class="clean_bq"><span><div bgcolor="#FFFFFF" text="#000000"><div></div><div>
<title></title>
<div class="moz-cite-prefix">Ok thanks! That helps
alot. My higher precision is there if I use PC_Get. Is
there a more efficient way of querying other than:<br>
<br>
select PC_Get(PC_Explode(pa),'X'), PC_Get(PC_Explode(pa),'Y'),
PC_Get(PC_Explode(pa),'Z'), PC_Get(PC_Explode(pa),'Red'),
PC_Get(PC_Explode(pa),'Green'), PC_Get(PC_Explode(pa),'Blue') from
sthelens4326 limit 100000;<br>
<br>
<br>
On 11/17/2014 5:50 PM, Paul Ramsey wrote:<br></div>
<blockquote cite="mid:etPan.546a89d3.71f32454.14ddc@Butterfly.local" type="cite">
<div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">
(a) you’ll want to use pc_get to actually get the coordinate value
and confirm the precision, you might just be seeing a text output
artifact as the json is written out</div>
<div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">
(b) you’ll want to check the pointcloud_formats entry for this pcid
and see what the specified precision actually is</div>
<div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">
(c) looks like you’re storing far more precision than you actually
need, if you reduced it appropriately, per what you see in those
results (lots of 0’s after the 6th digit) you’ll save lots of space
probably</div>
<div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">
<br></div>
<div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">
P.</div>
<div id="bloop_sign_1416268147267236864" class="bloop_sign">
<div><br></div>
-- <br>
Paul Ramsey<br>
<a class="moz-txt-link-freetext" href="http://cleverelephant.ca">http://cleverelephant.ca</a>
<div><a class="moz-txt-link-freetext" href="http://postgis.net">http://postgis.net</a></div>
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<br>
<p style="color:#000;">On November 17, 2014 at 3:46:40 PM, Ashley
Mort (<a moz-do-not-send="true" href="mailto:ashley_c_mort@raytheon.com">ashley_c_mort@raytheon.com</a>)
wrote:</p>
<blockquote type="cite" class="clean_bq">
<div>
<div><span>Can someone please help me figure out why I am losing
coordinate<br>
precision when I use pdal's pgpoingcloud.writer to write into
my<br>
Postgres DB?<br>
<br>
I have a .las file in epsg:4326 and when I put it though my
pdal<br>
pipeline, I seem to lose precision (-122.1831470 will become
-112.183)<br>
when I query for it.<br>
<br>
Below is a sample point from my .las file, the output I get
from<br>
querying postgres, and the pipeline file that I used. Can anyone
point<br>
out what I'm doing wrong? Thanks!<br>
<br>
<br>
postgres@ubuntu:/home/stack/Downloads$ pdal info st2-helens.las -p
5<br>
{<br>
"X": "-122.18314700000002",<br>
"Y": "46.238651000000004",<br>
"Z": "1161.8700000000001",<br>
"Intensity": "0",<br>
"ReturnNumber": "0",<br>
"NumberOfReturns": "0",<br>
"ScanDirectionFlag": "0",<br>
"EdgeOfFlightLine": "0",<br>
"Classification": "2",<br>
"ScanAngleRank": "0",<br>
"UserData": "0",<br>
"PointSourceId": "20",<br>
"Time": "0",<br>
"Red": "205",<br>
"Green": "205",<br>
"Blue": "185"<br>
}<br>
<br>
lidarimport=# select PC_AsText(PC_Explode(pa)) from sthelens4326
limit 10;<br>
pc_astext<br>
{"pcid":3,"pt":[-122.211,46.1886,1874.3,0,0,0,0,0,1,0,0,12,0,242,242,238,1.1605<br>
3e+007,0]}<br>
{"pcid":3,"pt":[-122.211,46.1886,1874.3,0,0,0,0,0,2,0,0,21,0,242,242,238,7.4041<br>
5e+006,0]}<br>
<br>
<?xml version="1.0" encoding="UTF-8"?><br>
<Pipeline version="1.0"><br>
<Writer type="drivers.pgpointcloud.writer"><br>
<Option name="connection">dbname='lidar'
user='postgres'<br>
password='password'</Option><br>
<Option name="table">StHelens4326</Option><br>
<Option name="srid">4326</Option><br>
<Filter type="filters.chipper"><br>
<Option name="capacity">400</Option><br>
<Filter type="filters.cache"><br>
<Reader type="drivers.las.reader"><br>
<Option name="filename">st2-helens.las</Option><br>
<Option
name="spatialreference">EPSG:4326</Option><br>
</Reader><br>
</Filter><br>
</Filter><br>
</Writer><br>
</Pipeline><br>
<br>
--<br>
Ashley Mort<br>
Sr. Software Engineer<br>
Raytheon - Intelligence and Information Systems<br>
972-205-5165 (office)<br>
814-571-3039 (cell)<br>
<br>
_______________________________________________<br>
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</span></div>
</div>
</blockquote>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Ashley Mort
Sr. Software Engineer
Raytheon - Intelligence and Information Systems
972-205-5165 (office)
814-571-3039 (cell)
</pre>
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