I have downloaded the single purchase raster file of the Australia-Oceania from Open tiles. The download has finished but when I attempt to open the file using GeoPro or QGIS I receive an error message that this file cannot be loaded. Can anyone help?
Shauna
My theory is that you have to open the file with the blob logo (second version of the file listed in the file browser) and since the data set is so big (6+ gb) it will take a very long time to open.
It's worth also posting a new question on their support forum:
https://support.maptiler.com/s2-desktop
Here's how I've come to this theory:
You've downloaded and installed QGIS from here
https://qgis.org/en/site/forusers/download.html
You've downloaded the mbtiles Australia map from here
https://openmaptiles.com/downloads/tileset/osm/australia-oceania/?usage=open-source
I found a guide for opening mbtiles in QGIS:
https://support.maptiler.com/i77-open-maps-in-qgis
I open QGIS
I click start a new blank project and
then drag the .mbtiles file over into the main window that now appears blank
dragging the file with the grid icon I receive an error message:
Invalid Layer: GDAL provider Cannot open GDAL dataset C:/.../2017-07-03_australia-oceania.mbtiles: `C:/.../2017-07-03_australia-oceania.mbtiles' not recognized as a supported file format. Raster layer Provider is not valid (provider: gdal, URI: C:/.../2017-07-03_australia-oceania.mbtiles
When I load the australia-oceania.mbtiles file with the blob logo, it loads for a very, very long time (3+ hours). I have not been able to wait for it to completely load.
To see if opening a file like this actually works, I downloaded a sample .mbtiles file from this website: https://docs.mapbox.com/help/glossary/mbtiles/
Opening the version of the sample trails.mbtiles file from the website above rendered the same error. If I open the version that looks like a blob for the icon, it loads in QGIS right away. This leads me to believe the loading time just takes forever since the open tiles .mbtiles file is so big.
When googling large files taking a long time to open with QGIS there are several issues open for other file types. It leads me to believe this may not be different: https://issues.qgis.org/issues/19509
Related
I have an app that lets the user pick local files and send them to the backend to add to their vault. To pick the file, I use FilePicker.platform.pickFiles. It seems to work fine, the file is picked and when it's an image we show a preview to the user (and it always works).
Once the user has picked all their files, we create a list of Future to try and send the files to the backend, then we await the list to resolve. If we deem a picture is too big, we reduce the size using FlutterImageCompress.compressAndGetFile.
This usually works, but on iPhone, there is a seemingly random behavior where the file isn't found and an error is thrown : Cannot retrieve length of file, path = '/private/var/mobile/Containers/Data/Application/3600F812-FD42-4441-A654-766991E45E04/tmp/com.feykro.myApp.int-Inbox/myFile.pdf' (OS Error: No such file or directory, errno = 2)
The file in the example works just fine in other instances, the problem seems random and not directly tied to the file I chose. The problem is not exclusive to pdf files either, as it also occurs on images even though they're picked correctly and displayed in the app.
Any idea what could be causing this ?
Thanks in advance !
I am using C# application with WebBrowser control to render and print MHT file using Internet explorer(IE).
recent i faced more time issue while print MHT file, single file took around a 1 hour to print file.
investigating MHT file, i found this file having more Links which may require to connect with internet and takes time load details.
This same files works fine with the older IE version having the "Work Offline" option. In current IE11 version work offline option is removed.
So any one have any idea how to resolve this time consumption issue of MHT file while print.
Thanks
I have tried for almost 2 days but unable to find any solution. I am doubtful whether it's a bug, but not sure.
I have downloaded some pdf files in my documents directory. I can view most of these files with QLPreviewController; however, when I try to open one especially large file (almost ~250 MB), QLPreviewController only shows the title of file with its size. Don't know how, but ONLY ONCE while debugging the issue it successfully loaded this file.
How do I resolve this?
I have a spreadsheet that has several worksheets, each containing a hundred or so hyperlinks to other documents on our network (file:////server/share/path/to/spreadsheet.xls). Opening these files within Excel 2003 takes a very long time, compared to how long it takes to open in 2007 or 2010. I took a look in Task Manager at the network tab to see what was going on when these files are opened and noticed a lot of steady network traffic while the file was opening, and as soon as the spreadsheet finally displayed on the screen, the network traffic dropped down to almost nothing. As I removed some of those links, the file would open faster, until I finally got rid of all the links and the file opened almost as fast as any other normal spreadsheet. Is there a way to prevent Excel from doing whatever it's doing with those links when the file first opens?
This is a programming-related forum so:
Workbooks.Open AFile, False
See: http://msdn.microsoft.com/en-us/library/ff194819.aspx
I have a system set up to download jad files on users' Blackberries, but it only works intermittently, and seemingly randomly. If the user clicks on the link within their BlackBerry browser, 95% of the time on the first try an error message will pop up saying there was an HTTP 500 error (which our server never returns).
Viewing the details of this message within the blackberry browser, it says nothing but java.lang.nullpointerexception which, again, could not have come from our server (running apache/php).
However, if the user clicks on the link a few more times, or navigates away and goes back to that page, it suddenly works. No change on the server, it just shows the application install screen. Unfortunately, this doesn't always work; sometimes the error 500 just keeps showing up.
The link is rather long (containing an sha hash as a token as part of the URL), but I would think that a long URL would either always be broken or always work, not work intermittently.
The link uses a php script to download the jad and cod files. Linking to the files directly rather than using the script seems to work more often (I haven't determined if that also ever has an error 500 or not), but I can't find any issues with the headers. The content type is set correctly and, like I said, if the headers were an issue, I'd think it would either always work or always break.
Any clues?
You may be able to shed some light on the problem by looking at the event logs, which you can get using JavaLoader:
javaloader -u eventlog > event.log
Search for NullPointerException within those logs and you'll be able to see what's causing it.
I can't explain the intermittent behaviour, but I had a similar situation where I was getting the java.lang.NullPointerException in the browser details. Unfortunately, the Event Log (as dumped by javaloader.exe) or by viewing on-device using Alt-L-G-L-G didn't show the exception.
(I'm using bb-ant-tools and JDE 4.6.1.) When the signature tool ran, I noticed that there were two .cod files being signed and I can see both of them inside the .jar file the compiler creates. But the output written was a single .cod file of size 92306 bytes that was not a .zip of smaller .cod files. The compiler somehow was not able to create a .cod that contained siblings. For comparison, compiling the project with JDE 5.0.0 created sibling .cod files that were able to be loaded over OTA.
My project included an .mp3 file of 53542 bytes which I happened to not require. After removing it, the 4.6.1 compiler outputted a single .cod and I was able to successfully download it via OTA.