"unexpected indent" in the script

Question

I'm using a QGIS 2.8 in windows 10. I have 2 scripts that are working separately but when I write both in just one script, it doesn't work. The 1st script is to load one raster to QGIs with a defined legend, the 2nd script is to compose a print layout and convert it to an image (png) in a output directory. My entire script is:

from PyQt4.QtGui import *
from PyQt4 import QtGui
from PyQt4.QtCore import * 
from PyQt4.QtXml import *
from PyQt4.QtCore import QSize
from PyQt4 import QtCore
from qgis import core, gui

lyr = QgsRasterLayer("C:/PATRICIA/IG/TESTE/TEST/FWI_20150802.dat", "FWI_20150802")
s = QgsRasterShader()
c = QgsColorRampShader()
c.setColorRampType(QgsColorRampShader.INTERPOLATED)
i = [] 

i.append(QgsColorRampShader.ColorRampItem(8.5, QtGui.QColor('#2b9e27'), '8.5'))
i.append(QgsColorRampShader.ColorRampItem(17.2, QtGui.QColor('#fee717'), '17.2'))
i.append(QgsColorRampShader.ColorRampItem(24.6, QtGui.QColor('#ec7000'), '24.6'))
i.append(QgsColorRampShader.ColorRampItem(38.3, QtGui.QColor('#cc292c'), '38.3'))
i.append(QgsColorRampShader.ColorRampItem(100, QtGui.QColor('#75263b'), '100'))

c.setColorRampItemList(i)
s.setRasterShaderFunction(c)
ps = QgsSingleBandPseudoColorRenderer(lyr.dataProvider(), 1, s)
lyr.setRenderer(ps)
QgsMapLayerRegistry.instance().addMapLayer(lyr)

layers =iface.legendInterface().layers()
canvas=iface.mapCanvas()

for layer in layers:
    myFile = "C:/PATRICIA/IG/TESTE/Template.qpt"
    myTemplateFile = file(myFile, 'rt')
    myTemplateContent = myTemplateFile.read()
    myTemplateFile.close()
    myDocument = QDomDocument()
    myDocument.setContent(myTemplateContent, False)
    newcomp = iface.createNewComposer()
    newcomp.composition().loadFromTemplate(myDocument)
    newcomp.composition().refreshItems()

    c = iface.activeComposers()[0].composition()
    image = c.printPageAsRaster(0)
    image.save('C:/PATRICIA/IG/TESTE/OUTPUT/FWI_Arome.png','png')

My print layout composer appeared without layer! How can I solve this?

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My current Script which print layout composer appeared without layer: `# coding: utf-8

#------------------------
from PyQt4.QtGui import *
from PyQt4 import QtGui
from PyQt4.QtCore import * 
from PyQt4.QtXml import *
from PyQt4.QtCore import QSize
from PyQt4 import QtCore
from qgis import core, gui

lyr = QgsRasterLayer("C:/PATRICIA/IG/TESTE/TEST/FWI_20150802.dat", "FWI_20150802")
s = QgsRasterShader()
c = QgsColorRampShader()
c.setColorRampType(QgsColorRampShader.INTERPOLATED)
i = [] 

i.append(QgsColorRampShader.ColorRampItem(8.5, QtGui.QColor('#2b9e27'), '8.5'))
i.append(QgsColorRampShader.ColorRampItem(17.2, QtGui.QColor('#fee717'), '17.2'))
i.append(QgsColorRampShader.ColorRampItem(24.6, QtGui.QColor('#ec7000'), '24.6'))
i.append(QgsColorRampShader.ColorRampItem(38.3, QtGui.QColor('#cc292c'), '38.3'))
i.append(QgsColorRampShader.ColorRampItem(100, QtGui.QColor('#75263b'), '100'))

c.setColorRampItemList(i)
s.setRasterShaderFunction(c)
ps = QgsSingleBandPseudoColorRenderer(lyr.dataProvider(), 1, s)
lyr.setRenderer(ps)
QgsMapLayerRegistry.instance().addMapLayer(lyr)

layers =iface.legendInterface().layers()
canvas=iface.mapCanvas()

for layer in layers:
    myFile = "C:/PATRICIA/IG/TESTE/Template.qpt"
    myTemplateFile = file(myFile, 'rt')
    myTemplateContent = myTemplateFile.read()
    myTemplateFile.close()
    myDocument = QDomDocument()
    myDocument.setContent(myTemplateContent, False)
    newcomp = iface.createNewComposer()
    newcomp.composition().loadFromTemplate(myDocument)
    newcomp.composition().refreshItems()

    c = iface.activeComposers()[0].composition()
    image = c.printPageAsRaster(0)
    image.save('C:/PATRICIA/IG/TESTE/OUTPUT/FWI_Arome.png','png')`

Answer 1

I think when you're adding a layer and you want to add it to the composer to save it as an image, you need to make sure the layer is visible. Try adding this line after your for loop:

iface.legendInterface().setLayerVisible(layer, True)

So now it should look like:

for layer in layers:
    iface.legendInterface().setLayerVisible(layer, True)
    myFile = "C:/PATRICIA/IG/TESTE/Template.qpt"
    myTemplateFile = file(myFile, 'rt')
    myTemplateContent = myTemplateFile.read()
    myTemplateFile.close()
    myDocument = QDomDocument()
    myDocument.setContent(myTemplateContent, False)
    newcomp = iface.createNewComposer()
    newcomp.composition().loadFromTemplate(myDocument)
    newcomp.composition().refreshItems()
    c = iface.activeComposers()[0].composition()
    image = c.printPageAsRaster(0)
    image.save('C:/PATRICIA/IG/TESTE/OUTPUT/FWI_Arome.png','png')

I tested your code and it worked for me.

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Note that at the end of your code, you're saving it to a single image file. This works for one layer but if you want to save multiple layers in different image files, you will need to modify your code.