<html>
<head>
<!-- Template generated by Exclaimer Signature Manager Exchange Edition on 11:17:44 Tuesday, 4 June 2019 -->
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<style type="text/css">P.ImprintUniqueID {
MARGIN: 0cm 0cm 0pt
}
LI.ImprintUniqueID {
MARGIN: 0cm 0cm 0pt
}
DIV.ImprintUniqueID {
MARGIN: 0cm 0cm 0pt
}
TABLE.ImprintUniqueIDTable {
MARGIN: 0cm 0cm 0pt
}
DIV.Section1 {
page: Section1
}
.ExternalClass * {
LINE-HEIGHT: 100%
}
</style>
</head>
<body>
<p class="ImprintUniqueID"></p>
<div><br>
JPG images can only store a gps location internally, not the geographic extent of the image.<br>
<br>
TIFF is the only conventional raster image format which supports internal geographic extent metadata.<br>
<br>
<br>
Brent Wood<br>
<br>
Programme leader: Environmental Information Delivery<br>
NIWA<br>
DDI: +64 (4) 3860529<br>
<br>
</div>
<br>
<br>
<table class="ImprintUniqueIDTable" style="HEIGHT: 89px; TABLE-LAYOUT: fixed; WIDTH: 100%" cellspacing="0" cellpadding="0" align="center" border="0">
<tbody>
<tr>
<td style="TABLE-LAYOUT: fixed; WIDTH: 180px"><a href="http://www.niwa.co.nz" target=""><img width="180" height="88" style="border: 0px Solid ; " src="cid:image2643d9.PNG@f79ed398.42a8a704"></a><br>
<br>
</td>
<td style="TABLE-LAYOUT: fixed; WIDTH: 1159px">
<table cellpadding="0" cellspacing="0" class="37daf6e8-4a22-46b6-b408-e01a313821aaTable">
<tbody>
<tr>
<td nowrap="1"><font style="font-family:Calibri;font-size:10pt;color:#000000;font-weight:bold;">Brent Wood</font></td>
</tr>
<tr>
<td nowrap="1"><font style="font-family:Calibri Light;font-size:9pt;color:#000000;font-weight:bold;">Principal Technician - GIS and Spatial Data Management</font></td>
</tr>
<tr>
<td nowrap="1"><font style="font-family:Calibri Light;font-size:9pt;color:#000000;font-weight:bold;">Programme Leader - Environmental Information Delivery</font></td>
</tr>
<tr>
<td nowrap="1">
<table cellspacing="0" cellpadding="0" class="37daf6e8-4a22-46b6-b408-e01a313821aaTable" style="font-family:Calibri; font-size:9pt;">
<tbody>
<tr>
<td nowrap="1"><font style="font-family:Calibri;font-size:9pt;"><font style="font-family:Calibri;font-size:9pt;"><font style="font-family:Calibri;font-size:9pt;color:#244061;font-weight:bold;">T
</font><font style="font-family:Calibri;font-size:9pt;">+64-4-386-0529</font></font></font></td>
<td nowrap="1" align="Center"><font style="font-family:Calibri;font-size:9pt;"><font style="font-family:Calibri;font-size:9pt;"><font style="font-family:Calibri;font-size:9pt;"> </font></font></font></td>
<td nowrap="1"><font style="font-family:Calibri;font-size:9pt;"><font style="font-family:Calibri;font-size:9pt;"></font></font></td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td nowrap="1"><font style="font-family:Calibri;font-size:9pt;color:#000000;">National Institute of Water & Atmospheric Research Ltd (NIWA)</font></td>
</tr>
<tr>
<td nowrap="1"><font style="font-family:Calibri;font-size:9pt;color:#000000;">301 Evans Bay Parade, Greta Point, Wellington</font></td>
</tr>
<tr>
<td nowrap="1"><font style="font-family:Calibri;font-size:9pt;color:#000000;font-weight:bold;">Connect with NIWA:
</font><span style="font-family:Calibri;font-size:9pt;"><a href="https://www.niwa.co.nz" title="" target="" style="font-family:Calibri;font-size:9pt;"><span style="font-family:Calibri; font-size:9pt;">niwa.co.nz</span></a></span><font style="font-family:calibri;font-size:9pt;"> </font><span style="font-family:calibri;font-size:9pt;"><a href="https://www.facebook.com/nzniwa" title="" target="" style="font-family:calibri;font-size:9pt;"><span style="font-family:calibri; font-size:9pt;">Facebook</span></a></span><font style="font-family:Calibri;font-size:9pt;"> </font><span style="font-family:Calibri;font-size:9pt;"><a href="https://twitter.com/niwa_nz" title="" target="" style="font-family:Calibri;font-size:9pt;"><span style="font-family:Calibri; font-size:9pt;">Twitter</span></a></span><font style="font-family:Calibri;font-size:9pt;"> </font><span style="font-family:Calibri;font-size:9pt;"><a href="https://www.linkedin.com/company/niwa" title="" target="" style="font-family:Calibri;font-size:9pt;"><span style="font-family:Calibri; font-size:9pt;">LinkedIn</span></a></span><font style="font-family:Calibri;font-size:9pt;"> </font><span style="font-family:Calibri;font-size:9pt;"><a href="https://www.instagram.com/niwa_science" title="" target="" style="font-family:Calibri;font-size:9pt;"><span style="font-family:Calibri; font-size:9pt;">Instagram</span></a></span></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<table class="ImprintUniqueIDTable" style="HEIGHT: 37px; VERTICAL-ALIGN: bottom; BORDER-COLLAPSE: collapse; TABLE-LAYOUT: auto; WIDTH: 933px" cellspacing="0" cellpadding="0" border="0">
<tbody>
</tbody>
</table>
<table class="ImprintUniqueIDTable" style="HEIGHT: 14px; VERTICAL-ALIGN: bottom; BORDER-COLLAPSE: collapse; TABLE-LAYOUT: auto; WIDTH: 933px" cellspacing="0" cellpadding="0" border="0">
<tbody>
</tbody>
</table>
<table class="ImprintUniqueIDTable" style="BORDER-COLLAPSE: collapse; WIDTH: 100%" cellspacing="0" cellpadding="0" border="0">
<tbody>
</tbody>
</table>
<table class="ImprintUniqueIDTable" style="FONT-SIZE: x-small; FONT-FAMILY: Calibri; TABLE-LAYOUT: fixed" cellspacing="0" cellpadding="0" border="0">
<tbody>
<tr>
<td><font color="#244061" size="1" face="Calibri">
<table class="37daf6e8-4a22-46b6-b408-e01a313821aaTable">
<tbody>
<tr>
<td><font style="font-family:Calibri;font-size:7pt;color:#244061;"><font style="font-family:Calibri;font-size:8pt;color:#244061;">To ensure compliance with legal requirements and to maintain cyber security standards, NIWA's IT systems are subject to ongoing
monitoring, activity logging and auditing. This monitoring and auditing service may be provided by third parties. Such third parties can access information transmitted to, processed by and stored on NIWA's IT systems.</font></font></td>
</tr>
</tbody>
</table>
</font></td>
</tr>
</tbody>
</table>
<br>
<table class="ImprintUniqueIDTable" style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" border="0">
<tbody>
</tbody>
</table>
<table class="ImprintUniqueIDTable" style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="500" border="0">
<tbody>
</tbody>
</table>
<div>________________________________________<br>
From: Qgis-user <qgis-user-bounces@lists.osgeo.org> on behalf of Fernando M. Roxo da Motta <petro@roxo.org><br>
Sent: Tuesday, June 4, 2019 11:13<br>
To: qgis-user@lists.osgeo.org<br>
Subject: Re: [Qgis-user] Is location info included in metadata when save an image file?<br>
<br>
On Mon, 3 Jun 2019 11:01:06 -0300, Kirk Schmidt<br>
<kirk@nortekresources.com> wrote:<br>
<br>
<br>
> Hi Ert:<br>
><br>
> You can save locational data in jpg and pdf files from within the<br>
> Print Composer window. Under composition tab on the right hand side<br>
> of the window, scroll down and check the Save World File checkbox.<br>
> Export your map/composition as a jpg or pdf and the geolocation data<br>
> will be written to a world file for a jpg and internally for a pdf.<br>
<br>
Just to be sure that I understood it correctly. If I save as jpg<br>
the geolocation information will be only written to the world file if I<br>
check the Save World File checkbox. That means that, regardless to<br>
check or not that checkbox, the jpg image will not contain any<br>
geolocation information.<br>
<br>
Is that correct?<br>
<br>
<br>
><br>
> Good luck<br>
><br>
> Kirk Schmidt<br>
><br>
> On 6/2/2019 4:26 AM, Ert Four wrote:<br>
> > Thank you Alex and Roxo for your replies.<br>
> ><br>
> > From what I can tell the SVG and JPG files probably don't have<br>
> > location info in them, but it's also hard to tell what exactly the<br>
> > data is in some places, especially in the SVG.<br>
> ><br>
> > It looks like qgsmaprenderertask.cpp was written two years ago,<br>
> > which was after 2.14 came out.<br>
> ><br>
> > I will post on the developer list per Alex's suggestion. All of<br>
> > this is trying to prove that something doesn't exist -- which is<br>
> > always hard.<br>
> ><br>
> > Thanks again.<br>
> ><br>
> ><br>
> >> On June 1, 2019 at 4:41 PM "Fernando M. Roxo da Motta"<br>
> >> <petro@roxo.org> wrote:<br>
> >><br>
> >><br>
> >> On Thu, 30 May 2019 17:09:59 +0200 (CEST), Ert Four<br>
> >> <4ert@mailbox.org> wrote:<br>
> >><br>
> >><br>
> >>> Does any coordinate or location data get embedded in the image<br>
> >>> file if I use Project > Save as Image or Composer > Export as<br>
> >>> Image/PDF/SVG?<br>
> >>><br>
> >>> I'm using QGIS version 2.14.3 Essen, although I would like to know<br>
> >>> about more recent versions, too, for when I upgrade later.<br>
> >>><br>
> >>> (I'm aware of the option to check "World file on" and create a<br>
> >>> separate world file. What I need is to make sure there is no<br>
> >>> identifying info whatsoever from the project file in the image<br>
> >>> file itself.)<br>
> >>><br>
> >>> Eg, say I have a basemap like OpenStreetMap open for a country<br>
> >>> and I load points in another layer that are inside that country.<br>
> >>> Then I zoom in on a group of points from my data layer, I turn<br>
> >>> off the basemap layer, and make a map with just my data points. I<br>
> >>> want to preserve the relative spatial relationships between my<br>
> >>> points but not reveal where in the world the map came from. If I<br>
> >>> publish this image file, might the metadata reveal the location?<br>
> >>><br>
> >>> For the work we do, it's critically important we not unknowingly<br>
> >>> publish specific locations.<br>
> >>><br>
> >> AFAIK, if you save in PNG or JPEG format no coordinate<br>
> >> information is stored in metadata of the image:<br>
> >><br>
> >> $ exiftool Inhambu.jpg<br>
> >> ExifTool Version Number : 10.80<br>
> >> File Name : Inhambu.jpg<br>
> >> Directory : .<br>
> >> File Size : 49 kB<br>
> >> File Modification Date/Time : 2019:06:01 11:37:04-03:00<br>
> >> File Access Date/Time : 2019:06:01 11:37:04-03:00<br>
> >> File Inode Change Date/Time : 2019:06:01 11:37:24-03:00<br>
> >> File Permissions : rw-r--r--<br>
> >> File Type : JPEG<br>
> >> File Type Extension : jpg<br>
> >> MIME Type : image/jpeg<br>
> >> JFIF Version : 1.01<br>
> >> Resolution Unit : inches<br>
> >> X Resolution : 96<br>
> >> Y Resolution : 96<br>
> >> Image Width : 917<br>
> >> Image Height : 665<br>
> >> Encoding Process : Baseline DCT, Huffman coding<br>
> >> Bits Per Sample : 8<br>
> >> Color Components : 3<br>
> >> Y Cb Cr Sub Sampling : YCbCr4:2:0 (2 2)<br>
> >> Image Size : 917x665<br>
> >> Megapixels : 0.610<br>
> >><br>
> >> $ exiftool Inhambu.png<br>
> >> ExifTool Version Number : 10.80<br>
> >> File Name : Inhambu.png<br>
> >> Directory : .<br>
> >> File Size : 47 kB<br>
> >> File Modification Date/Time : 2019:06:01 11:37:04-03:00<br>
> >> File Access Date/Time : 2019:06:01 11:37:04-03:00<br>
> >> File Inode Change Date/Time : 2019:06:01 11:37:44-03:00<br>
> >> File Permissions : rw-r--r--<br>
> >> File Type : PNG<br>
> >> File Type Extension : png<br>
> >> MIME Type : image/png<br>
> >> Image Width : 954<br>
> >> Image Height : 652<br>
> >> Bit Depth : 8<br>
> >> Color Type : RGB with Alpha<br>
> >> Compression : Deflate/Inflate<br>
> >> Filter : Adaptive<br>
> >> Interlace : Noninterlaced<br>
> >> Significant Bits : 8 8 8 8<br>
> >> Pixels Per Unit X : 3780<br>
> >> Pixels Per Unit Y : 3780<br>
> >> Pixel Units : meters<br>
> >> Image Size : 954x652<br>
> >> Megapixels : 0.622<br>
> >><br>
> >> If you save as geotiff the positioning information should be<br>
> >> written in metadata. I don't know about the PDF format. In any<br>
> >> case, all informations, except the CRS, will be written to the<br>
> >> world file.<br>
> >><br>
> >> HTH<br>
> >><br>
> >><br>
> >>> Thank you, first time posting, very much appreciate QGIS and its<br>
> >>> community!<br>
> >><br>
> >><br>
> >><br>
> >><br>
> >><br>
> >><br>
> >><br>
> >> Roxo<br>
> >><br>
> >> --<br>
> >> ---------------- Non luctari, ludare -------------------+ WYSIWYG<br>
> >> Fernando M. Roxo da Motta <petro@roxo.org> | Editor?<br>
> >> Except where explicitly stated I speak on my own behalf.| VI !!<br>
> >> PU5RXO | I see<br>
> >> text, ------------ Quis custodiet ipsos custodes?-------------+ I<br>
> >> get text!<br>
> >> _______________________________________________<br>
> >> Qgis-user mailing list<br>
> >> Qgis-user@lists.osgeo.org<br>
> >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user<br>
> >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user<br>
> > _______________________________________________<br>
> > Qgis-user mailing list<br>
> > Qgis-user@lists.osgeo.org<br>
> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user<br>
> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user<br>
><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
Roxo<br>
<br>
--<br>
---------------- Non luctari, ludare -------------------+ WYSIWYG<br>
Fernando M. Roxo da Motta <petro@roxo.org> | Editor?<br>
Except where explicitly stated I speak on my own behalf.| VI !!<br>
PU5RXO | I see text,<br>
------------ Quis custodiet ipsos custodes?-------------+ I get text!<br>
<br>
_______________________________________________<br>
Qgis-user mailing list<br>
Qgis-user@lists.osgeo.org<br>
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user<br>
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user<br>
</div>
<br>
<br>
<br>
<p></p>
</body>
</html>