Copy feature between layers with PyQGIS I am new in PyQGIS and am having trouble programming how to copy features between layers.  Goal: from a robust layer (with more fields) copy its features to a 'simple' version layer.  from qgis.core import *  mapLayer = QgsProject.instance().mapLayersByName("MySQL:forexeasy,host=localhost,port=3306 authcfg='z4s291g',tables=avenida_rua|layername=avenida_rua")[0]  # selecionar estrutura dos fields name # criar um feature # clonar os  if (mapLayer.isValid()):     layer = QgsVectorLayer("D:\\workstation\\qgis\\temp\\fid_62.shp", 'lay', 'ogr')      if(layer.isValid()) :         print('init')         features = []         for feature in layer.getFeatures():             features.append(feature)          mapLayer.startEditing()         dataP = mapLayer.dataProvider()         dataP.addFeatures(features)         mapLayer.commitChanges()   Mean while I get this error:  exec(open('C:/Users/LUISMH~1/AppData/Local/Temp/tmp2vbxv1cy.py'.encode('utf-8')).read()) Traceback (most recent call last):   File "D:\OSGeo4W\apps\Python37\lib\code.py", line 90, in runcode     exec(code, self.locals)   File "&lt;input&gt;", line 1, in &lt;module&gt;   File "&lt;string&gt;", line 3, in &lt;module&gt; IndexError: list index out of range   I don't know if I would have to create a feature for the destination layer. And pass on the attributes features from the layer to destination feature. if so how?
Copying and pasting features using PyQGIS I have created a table join between two shapefiles which I've named 'OSMM' and 'Mastermap'. I want to copy and paste all features (polygons) without a match from the target layer ('Mastermap') into the parent shapefile ('OSMM'). I can't find any up-to-update code for QGIS 3.6. Here is my code so far: #1. loads the SHP files uri = 'C:/Users/xx/Downloads/OSMM.shp' vlayer = iface.addVectorLayer(uri,&quot;&quot;,&quot;ogr&quot;) uri = 'C:/Users/xx/Downloads/Mastermap.shp' vlayer = iface.addVectorLayer(uri,&quot;&quot;,&quot;ogr&quot;)  #2. Joins &quot;InvoiceNum&quot; from OSMM to Mastermap layerToJoin = QgsProject().instance().mapLayersByName('OSMM')[0] target = QgsProject().instance().mapLayersByName('Mastermap')[0] myJoin = QgsVectorLayerJoinInfo() myJoin.setJoinFieldName('InvoiceNum') myJoin.setTargetFieldName('InvoiceNum') myJoin.setJoinLayerId(layerToJoin.id()) myJoin.setUsingMemoryCache(True) myJoin.setJoinLayer(layerToJoin) myJoin.setJoinFieldNamesSubset(['InvoiceNum']) target.addJoin(myJoin)  #3. Selects NULL features from Mastermap params = { 'EXPRESSION' : '\&quot;OSMM_InvoiceNum\&quot; is NULL', 'INPUT' : 'C:/Users/xx/Downloads/Mastermap.shp', 'METHOD' : 0 } processing.run(&quot;qgis:selectbyexpression&quot;, params)  So how do I perform the PyQGIS version of Ctrl+C on 'Mastermap' and Ctrl+V into 'OSMM'? Presumably I will then need to use the following code: #5. Save the changes OSMM.commitChanges()
Images instead of radio buttons or dropdown list? Excel to CSV with UTF8 encoding I am afraid that listing doesn't support javascript.  \begin{lstlisting}[language=javascript] ... \end{lstlisting}   What am I doing wrong? What problem does oversampling, undersampling, and SMOTE solve? Find the value of $P(1)$ What is the difference between the bind and live methods in jQuery? I've seen some of the other threads on using strings as x axis labels, but nothing that fits my situation.  I'm trying to create a bar chart from a CSV file. I can do it so long as everything in the data is numeric. However, in my actual data table, the first row is multi-word string descriptions. I need these descriptions to be the x axis labels for each bar.  I've tried symbolic x coords, but I get the "could not parse input as a floating point number" error. I've also tried adding an ID column and using that as the x values, and assigning xtick labels as the string descriptors. I get the same issue that way.  Here's an attempt at an MWE:  \documentclass{article}  \usepackage{lmodern} \usepackage{tikz} \usepackage{pgfplots} \usepackage{pgfplotstable}  \begin{document}  \pgfplotstabletypeset[columns/category/.style={string type},col sep=comma]{Book3.csv} \vspace{1cm}  \begin{tikzpicture} \begin{axis}[ ybar, xlabel=Xstuff, ylabel=Value, symbolic x coords={cat a,cat b,cat c,cat d,cat e,cat f,cat g}, %xtick labels={cat a,cat b,cat c,cat d,cat e,cat f,cat g},% this is from when i tried the xtick label method xtick=data, nodes near coords, nodes near coords align={vertical}] \addplot table[x=category,y=value]{Book3.csv}; %\addplot table[x=category,y=value]{Book3.csv};&amp; again, from trying the xtick label method  \end{axis}  \end{tikzpicture} \end{document}   Since I suspect this might get answered quickly by you chart gurus, I have a follow-up question:  I have to do a bunch of these charts, and I would like to automate the symbolic x coords process. Is there a way to populate the dictionary of accepted x coords by reading a column of the data? (something like symbolic x coords={columns/category/{Book3.csv}} )?  Book3.csv looks like this (ignore the ID column if using the xtick label method):  ID, category, value, value 2 1,  cat a,    1,     7 2,  cat b,    2,     6 3,  cat c,    3,     5 4,  cat d,    4,     4 5,  cat e,    5,     3 6,  cat f,    6,     2 7,  cat g,    7,     1 What happens when I terminate a process and the socket send buffer is not empty? In Windows (and probably in other operating systems), if a process has a TCP connection with another process on another machine, and then I terminate the process, an RST packet will be sent to the other machine to indicate the end of the connection.  Now imagine that when the process is terminated, there were still some data left in the send buffer. What will happen in this case, will these remaining data be sent to the other machine followed by an RST packet, or will these remaining data be ignored and only an RST packet is sent? Does JPA support mapping to sql views? I'm currently using Eclipselink, but I know now days most JPA implementations have been pretty standardized. Is there a native way to map a JPA entity to a view? I am not looking to insert/update, but the question is really how to handle the @Id annotation. Every entity in the JPA world must have an ID field, but many of the views I have created do not conform to this. Is there native support for this in the JPA or do I need to use hacks to get it to work? I've searched a lot and found very little information about doing this. Title bar settings missing in GNOME Tweaks on Ubuntu 20.04 I tried to move my "close, minimise and maximise" to the right + add the macOS theme to it. However, I have not been able to find any settings for that. In GNOME Tweaks > Windows the settings to put the buttons to the right are missing completely. I have a bibliography in which a particular author wrote two papers in the same year. Bibtex is sorting them alphabetically by title, but I want them listed chronologically. (So in the example below 'universal grammar' should precede 'English as a formal language'.) What's the appropriate way to flip the order?  MWE:  \documentclass{article} \usepackage{natbib} \begin{document}  ... formal semantics in the  Montagovian tradition \citep{montague1970aug,montague1970befl,montague1973ptq}.   \bibliographystyle{harvard} \bibliography{test} \end{document}   This generates the text 'formal semantics in the Montagovian tradition (Montague, 1970b,a, 1973)' whereas I actually want '1970a,b,1973'.  test.bib file for MWE:  @incollection{montague1973ptq,   title={The proper treatment of quantification in ordinary {English}},   author={Montague, Richard},   booktitle={Approaches to natural language},   editor={Hintikka, K. Jaakko J. and Moravcsik, Julius M.E. and Suppes, Patrick},   pages={221--242},   year={1973},   publisher={Dordrecht} }  @article{montague1970aug,   title={Universal grammar},   author={Montague, Richard},   journal={Theoria},   volume={36},   number={3},   pages={373--398},   year={1970},   publisher={Blackwell Synergy} }  @incollection{montague1970befl,   title={English as a formal language},   author={Montague, Richard},   booktitle={Linguaggi nella Societa e nella Tecnica},   editor={Visentini, Bruno and others},   publisher={Edizioni di Comunità},   pages={189--224},   year={1970} } How to change user in WinSCP? I'm using WinSCP to access Unix computers. How can I change user after I have logged into a Unix server using WinSCP?  E.g. I have personal account in Unix computer A. I can log into this computer using PuTTY and then change user to root user  $sudo /usr/bin/su - rootuser   How can I do the same thing using WinSCP? I don't know the password for rootuser. Replicate data from one list to another list sharepoint I have a list A with columns Emp ID, First name &amp; last name and list B wih column name Emp ID, First name, last name , phone number and address.  I want functionality such that when i enter item in List A and save same data should get copied in 3 columns of list B. Can someone help me with the approach. Thnks I have a Python regular expression that contains a group which can occur zero or many times - but when I retrieve the list of groups afterwards, only the last one is present. Example:  re.search("(\w)*", "abcdefg").groups()  this returns the list ('g',)  I need it to return ('a','b','c','d','e','f','g',)  Is that possible? How can I do it? Questions with ignored tags still visible in iOS app I have set to ignore [php] tag and chose to hide questions in preferences:        But I still see questions tagged [php] in the iOS app.         Seems the app can't distinguish options for ignored tags.   App Version: 1.6.5.3 Device: iPad Air 2 (Wi-Fi) OS Version: Version 10.3.1 (Build 14E304) Possible to draw an Item in a Grid with only 3 sides of a Frame? I need to prove that $$\sum_{n=1}^{\infty} {\sin{100n}} \; \text{diverges}$$ I think the best way to do it is to show that $\lim_{n\to \infty}{\sin{100n}}\not=0$. But how do I prove it? How do I add .e00 data into my QGIS project? How much set theory and logic should typical algebraists/analysts/geometers know? (soft-question) I know enough amount of set theory and logic to study grad-level math. However, I don't know more advanced set theory and logic, such as the ones on Kunen's or Shoenfield's texts. Although it's good to learn such advanced topics, I may not have enough time to do so, since I will probably put my emphasis on algebra, analysis or geometry as well as mathematical physics.   Although how much set theory and logic I should learn is totally up to what sort of analysis, algebra or geometry I will study, I want to know how much of them typical competitive algebraists/analysts/geometers know. If you are one of them, how much do you know? Can I run CAT5/6 cables parallel to electrical cables? I am building a new house and am planning to hardwire network cables into each room.   Can I run CAT5/6 cables parallel to electrical wires without introducing any general safety issues or losing much in connection quality?  Wiring runs for up to 25 metres from patch panel and distribution board in garage to rooms.   My research indicates that is should be fine if they are in separate conduits or if the CAT cables are shielded.