QGIS Python (PyQGIS) - Loading and symbolizing raster layers

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  • เผยแพร่เมื่อ 27 ส.ค. 2024

ความคิดเห็น • 45

  • @IyadKhuder
    @IyadKhuder 4 ปีที่แล้ว +5

    Thanks a lot. It's great. Just if I could ask you to increase the font size of the code a bit in future videos, because it's too small for some viewers I guess (at least for me) thanks anyways :)

    • @dominikzaire3020
      @dominikzaire3020 3 ปีที่แล้ว

      i guess it is pretty randomly asking but do anybody know a good website to watch new movies online?

    • @isaiahmarvin9492
      @isaiahmarvin9492 3 ปีที่แล้ว

      @Dominik Zaire try Flixzone. Just search on google for it :)

    • @alivan7334
      @alivan7334 3 ปีที่แล้ว

      @Dominik Zaire i use flixzone. Just google for it =)

    • @leonleroy1291
      @leonleroy1291 3 ปีที่แล้ว

      @Dominik Zaire I watch on flixzone. Just search on google for it :)

    • @andrewjalen8727
      @andrewjalen8727 3 ปีที่แล้ว

      @Dominik Zaire I watch on flixzone. You can find it by googling :)

  • @furkanyuce9107
    @furkanyuce9107 3 ปีที่แล้ว +1

    Hay - I keep getting an error while opening the QGIS application. Error = utf-8 codec can't decode byte 0xfd in position 3: invalid start byte can you help?

  • @sadiemoland2157
    @sadiemoland2157 3 ปีที่แล้ว +2

    This is a great tutorial but does anyone know what the code would be to add gradient stops between the minimum and maximum values? I want to use equal intervals and have a specific number of classes.

  • @erichpurpur2550
    @erichpurpur2550 5 ปีที่แล้ว +1

    How does it work to shade a raster layer using the QgsPalettedRasterRenderer class?

    • @geospatialschool
      @geospatialschool  5 ปีที่แล้ว

      I haven't tried this yet. Here's a link to the Python documentation for the class as a place to start: qgis.org/pyqgis/3.2/core/other/QgsPalettedRasterRenderer.html
      I will add this to my list of videos and try to get a tutorial made in the next few weeks.

  • @piyaphatc5794
    @piyaphatc5794 4 ปีที่แล้ว +2

    AttributeError: 'NoneType' object has no attribute 'dataProvider' , please guide me!

  • @natanaellorenzi5
    @natanaellorenzi5 4 ปีที่แล้ว +1

    Hi dude. Thanks for this video. I have a question. Can i create a script to import csv and shp and automatically generate a layout with a pdf as output (print composer)?

    • @geospatialschool
      @geospatialschool  4 ปีที่แล้ว +1

      Yes you can. I don't have a specific video on that, but this one will get you started.

  • @bhdotyeh
    @bhdotyeh 3 ปีที่แล้ว

    Hi - do you know how to use estimated (faster) accuracy when computing band min/max values as opposed to exact values?

  • @DanielCardin_ATX
    @DanielCardin_ATX 5 ปีที่แล้ว

    At 3:07, several extra lines of code appear and there's no reference in the dialog to them. Am I missing something?

    • @geospatialschool
      @geospatialschool  5 ปีที่แล้ว +1

      Sorry. That's my mistake. The code gets information from the file, gets the file name without the directory path or extension, and adds a raster layer the QGIS interface with the layer name the same as the file name. As long as you add this line of code you'll be okay:
      rlayer=iface.addRasterLayer(fn)
      where fn is the path to your raster layer.

  • @okerekechisom4985
    @okerekechisom4985 10 หลายเดือนก่อน

    How can I Script showing the following with PyQGIS: 1. Number of polygons that have the selected leading species.
    2. Minimum and maximum area of the stands that have the leading species.
    3. The average of the leading species percentages within the stands.
    4. The total area and average area of the stands, containing the leading species.

  • @crtnnn
    @crtnnn ปีที่แล้ว +1

    Page in the video description not found :(

    • @geospatialschool
      @geospatialschool  ปีที่แล้ว +1

      I updated the description with new links

  • @annasam4461
    @annasam4461 ปีที่แล้ว

    Hi,
    Is there anyway to create a raster attribute table using QGIS Python ?

  • @adityaeaturu2058
    @adityaeaturu2058 5 ปีที่แล้ว +1

    Which QGIS version are you using?

    • @geospatialschool
      @geospatialschool  5 ปีที่แล้ว +1

      In this video, I believe it's version 3.4. The lowest version it would be is 3.2.

    • @adityaeaturu2058
      @adityaeaturu2058 5 ปีที่แล้ว +1

      @@geospatialschool Thanks! That was quick

  • @kavitachaudhary2818
    @kavitachaudhary2818 5 ปีที่แล้ว

    dataprovider() showing error "AttributeError: 'NoneType' object has no attribute 'dataprovider'." Qgis version is 3.4.2. suggest a solution please.

    • @geospatialschool
      @geospatialschool  5 ปีที่แล้ว +1

      You probably need to use 'dataProvider()' instead of 'dataprovider()'.

  • @nicolerodriguezvargas223
    @nicolerodriguezvargas223 4 ปีที่แล้ว

    Is it possible to make a code that interpolates some points and generate isolines? Thanks!

  • @lloydpal1542
    @lloydpal1542 9 หลายเดือนก่อน

    sir i have a error in this tutorial i wonder if you have the file in the .tif file base on the line 1 is not define please answer my problem thankyou

    • @geospatialschool
      @geospatialschool  9 หลายเดือนก่อน

      You can download any .tif file and use it in place of the file I use in this tutorial

    • @lloydpal1542
      @lloydpal1542 9 หลายเดือนก่อน +1

      @@geospatialschool thanks sir

  • @gunjankadam4944
    @gunjankadam4944 11 หลายเดือนก่อน

    i want to use SCP, how can use it through script

  • @razvanafloarei6256
    @razvanafloarei6256 4 ปีที่แล้ว

    What have you imported at line 1: Fn='C:/temp/smr/trimmer_peak/dem/dem.tif'

  • @bluefoxtechnical5001
    @bluefoxtechnical5001 5 ปีที่แล้ว

    Hi, how can I visualise DEM with flood analysis.

    • @geospatialschool
      @geospatialschool  5 ปีที่แล้ว

      What kind of flood analysis do you want to do?

  • @b.j2770
    @b.j2770 5 ปีที่แล้ว

    where is the raster/file.tif file?. can i download?

    • @geospatialschool
      @geospatialschool  5 ปีที่แล้ว

      See this video for how to download your own DEM: th-cam.com/video/VlKkAYoNoRE/w-d-xo.html

  • @thaooan1476
    @thaooan1476 3 ปีที่แล้ว

    Python Console
    Use iface to access QGIS API interface or Type help(iface) for more info
    Security warning: typing commands from an untrusted source can harm your computer
    exec(open('E:/OneDrive - TVBC/0_Tài liệu/Python/Xử lý ảnh.py'.encode('utf-8')).read())
    Traceback (most recent call last):
    File "C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib\code.py", line 90, in runcode
    exec(code, self.locals)
    File "", line 1, in
    File "", line 11, in
    NameError: name 'Qcolor' is not defined

  • @jdaking7648
    @jdaking7648 ปีที่แล้ว

    Mine came out grayscale 🤷‍♂️

  • @isaacsilva2637
    @isaacsilva2637 3 ปีที่แล้ว

    Can you make this in the new version please ?

    • @geospatialschool
      @geospatialschool  3 ปีที่แล้ว

      This will work with any version of QGIS 3. Just tested it.

  • @vaibhavrajput8196
    @vaibhavrajput8196 4 ปีที่แล้ว

    Join tables using PyQgis! please cover