title: How to Call QT_SCALE_FACTOR?
body: <p>I have Anaconda installed on my computer. When I open Spyder though, it looks terrible because the DPI is high. I've been told to run <code>QT_SCALE_FACTOR=2.5 spyder</code> to solve the problem. However, I get back <code>'QT_SCALE_FACTOR' is not recognized as an internal or external command, operable program or batch file.</code> This is frustrating because I have <code>pyqt</code> installed through Anaconda. It's also part of my path <code>C:\...\Anaconda3\Lib\site-packages\PyQt5</code> If I call <code>qmake -query</code>, I get:</p>
  
  <pre><code>qmake -query
  QT_SYSROOT:
  QT_INSTALL_PREFIX:C:/Users/.../Anaconda3/Library
  QT_INSTALL_ARCHDATA:C:/Users/.../Anaconda3/Library
  QT_INSTALL_DATA:C:/Users/.../Anaconda3/Library
  QT_INSTALL_DOCS:C:/Users/.../Anaconda3/Library/doc
  QT_INSTALL_HEADERS:C:/Users/.../Anaconda3/Library/include/qt
  QT_INSTALL_LIBS:C:/Users/.../Anaconda3/Library/lib
  QT_INSTALL_LIBEXECS:C:/Users/.../Anaconda3/Library/bin
  QT_INSTALL_BINS:C:/Users/.../Anaconda3/Library/bin
  QT_INSTALL_TESTS:C:/Users/.../Anaconda3/Library/tests
  QT_INSTALL_PLUGINS:C:/Users/.../Anaconda3/Library/plugins
  QT_INSTALL_IMPORTS:C:/Users/.../Anaconda3/Library/imports
  QT_INSTALL_QML:C:/Users/.../Anaconda3/Library/qml
  QT_INSTALL_TRANSLATIONS:C:/Users/.../Anaconda3/Library/translations
  QT_INSTALL_CONFIGURATION:
  QT_INSTALL_EXAMPLES:C:/Users/.../Anaconda3/Library/examples
  QT_INSTALL_DEMOS:C:/Users/.../Anaconda3/Library/examples
  QT_HOST_PREFIX:C:/Users/.../Anaconda3/Library
  QT_HOST_DATA:C:/Users/.../Anaconda3/Library
  QT_HOST_BINS:C:/Users/.../Anaconda3/Library/bin
  QT_HOST_LIBS:C:/Users/.../Anaconda3/Library/lib
  QMAKE_SPEC:win32-msvc2015
  QMAKE_XSPEC:win32-msvc2015
  QMAKE_VERSION:3.0
  QT_VERSION:5.6.2
  </code></pre>
  
  <p>So as you can see, it appears I have it installed just fine. How come I can't call <code>QT_SCALE_FACTOR</code>? How can I do that correctly? Thanks! (Incidentally, I'm running Windows 10 if that helps.)</p>