File extension QPJ
| File type | Quantum GIS Project |
| Developer | Quantim GIS project team |
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What is a QPJ file?
QPJ is a filename extension associated with files created by Quantum GIS, a geographic information analysis and mapping software. QuantumGIS is distributed under the Open Source GNU license and is available for Linux, Unix, Mac Os, and Windows platforms.
QPJ files store projects created with Quantum GIS. The projects is maintained by Quantum GIS project team.
Program(s) that can open the .QPJ file
Windows
How to open QPJ files
If you cannot open the QPJ file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports QPJ among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the QPJ file can be found in the table. Now just download and install the appropriate application.
Possible problems with the QPJ format files
The inability to open and operate the QPJ file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the Quantum GIS Project file. Below is a list of possible problems.
- Corruption of a QPJ file which is being opened
- Incorrect links to the QPJ file in registry entries.
- Accidental deletion of the description of the QPJ from the Windows registry
- Incomplete installation of an application that supports the QPJ format
- The QPJ file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the QPJ file.
- Drivers of equipment used by the computer to open a QPJ file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the QPJ file should operate with your programs without any problem. If the problem with the QPJ file has not been solved, it may be due to the fact that in this case there is also another rare problem with the QPJ file. In this case, the only you can do is to ask for assistance of a professional staff.
How to associate the file with an installed software?
If you want to associate a file with a new program (e.g. my-file.QPJ) you have two ways to do it. The first and the easiest one is to right-click on the selected QPJ file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the QPJ file extension to the corresponding software in the Windows Registry.
Is there one way to open unknown files?
Many files contain only simple text data. It is possible that while opening unknown files (e.g. QPJ) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.