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answered Jun 11 at 14:57

I could get the same TypeError:

File "C:\OSGeo4W\apps\Python312\Lib\code.py", line 90, in runcode
    exec(code, self.locals)
  File "<input>", line 1, in <module>
  File "<string>", line 8, in <module>
TypeError: QgsRasterFileWriter.writeRaster(): arguments did not match any overloaded call:
  overload 1: argument 1 has unexpected type 'int'
  overload 2: argument 1 has unexpected type 'int'

when I proceeded with this script:

from qgis.utils import iface
from qgis.core import QgsRasterFileWriter

layer = iface.activeLayer()
provider = layer.dataProvider()

out_file = provider.dataSourceUri().replace('.tif', '.img')
file_writer = QgsRasterFileWriter(out_file)
result = file_writer.writeRaster(provider.xSize(), provider.xSize(), provider.extent(), provider.crs())

As was mentioned in @user30184's comment it is vital to include the pipe-parameter of the QgsRasterPipe class type:

Contains a pipeline of raster interfaces for sequential raster processing.

There are also several suggestions regarding your code:

check firstly details about the writeRaster()-method with help(QgsRasterFileWriter.writeRaster):

 Help on built-in function writeRaster:

 writeRaster(...)
     writeRaster(self, pipe: Optional[QgsRasterPipe], nCols: int, nRows: int, outputExtent: QgsRectangle, crs: QgsCoordinateReferenceSystem, feedback: Optional[QgsRasterBlockFeedback] = None) -> Qgis.RasterFileWriterResult
     Write raster file

     :param pipe: raster pipe
     :param nCols: number of output columns
     :param nRows: number of output rows (or -1 to automatically calculate row number to have square pixels)
     :param outputExtent: extent to output
     :param crs: crs to reproject to
     :param feedback: optional feedback object for progress reports

     .. deprecated:: QGIS 3.8
       use version with transformContext instead

treat file export results properly using the Qgis.RasterFileWriterResult
make use of the QgsRasterBlockFeedback class and its errors()-method to get more details about errors while retrieving the raster block
apply the Python Try Except blocks to handle errors and exceptions
check if your input QgsRasterLayer is solid with the isValid()-method
imports can be useful to make your code reusable in the future in standalone applications
delete the writer object with del statement

In the end, your code may look as follows:

from qgis.utils import iface
from qgis.core import Qgis, QgsRasterPipe, QgsRasterFileWriter, QgsRasterBlockFeedback

layer = iface.activeLayer()

if layer.isValid():
    provider = layer.dataProvider()

    pipe = QgsRasterPipe()
    pipe.set(provider.clone())

    out_file = provider.dataSourceUri().replace('.tif', '.img')
    file_writer = QgsRasterFileWriter(out_file)

    try:
        feedback = QgsRasterBlockFeedback()
        result = file_writer.writeRaster(pipe, provider.xSize(), provider.xSize(), provider.extent(), provider.crs(), feedback)
        if result != Qgis.RasterFileWriterResult.Success:
            print(feedback.errors())
    except Exception as e:
        print(e)
        
    del file_writer

References:

answered Jun 11 at 14:57

Taras ♦