Did you check the UCI Machine Learning repository? http://archive.ics.uci.edu/ml/datasets.html What about this one? http://archive.ics.uci.edu/ml/datasets/UJI+Pen+Characters This is what you may be looking for: https://www.nist.gov/itl/iad/image-group/emnist-dataset
From the MSDN Forums: If you right-click the TableAdapter in the Dataset Designer and click ‘Configure’ the TableAdapter Configuration Wizard opens where you can reconfigure the main query that defines the schema of your table. This should leave the additional TableAdapter queries (the additional methods) that were added after initial configuration. Of course the additional … Read more
You can use rpy2 package to access all R datasets from Python. Set up the interface: >>> from rpy2.robjects import r, pandas2ri >>> def data(name): … return pandas2ri.ri2py(r[name]) Then call data() with any dataset’s name of the available datasets (just like in R) >>> df = data(‘iris’) >>> df.describe() Sepal.Length Sepal.Width Petal.Length Petal.Width count 150.000000 … Read more
Like many people, I have my own standard data access components, which include methods to return a DataSet. Of course, if a ConstraintException is thrown, the DataSet isn’t returned to the caller, so the caller can’t check for row errors. What I’ve done is catch and rethrow ConstraintException in such methods, logging row error details, … Read more
In their example, the dygraphs library handles six thousand data points in a very fast manner. Perhaps that would be suitable for your needs? It is based on Canvas with excanvas for IE support.
For Plotly Express, you need to use the custom_data argument when you create the figure. For example: fig = px.scatter( data_frame=df, x=’ColX’, y=’ColY’, custom_data=[‘Col1’, ‘Col2’, ‘Col3’] ) and then modify it using update_traces and hovertemplate, referencing it as customdata. For example: fig.update_traces( hovertemplate=”<br>”.join([ “ColX: %{x}”, “ColY: %{y}”, “Col1: %{customdata[0]}”, “Col2: %{customdata[1]}”, “Col3: %{customdata[2]}”, ]) ) … Read more
Update your XAML with this: <ComboBox Name=”cbGastid” ItemsSource=”{Binding}” DisplayMemberPath=”Description” SelectedItem=”{Binding Path=id}” IsSynchronizedWithCurrentItem=”True” SelectedIndex=”0″ /> // Add me!
You can also use the DataSet’s AcceptChanges() method to apply the deletes fully. ds.Tables[0].Rows[0].Delete(); ds.AcceptChanges();
It seems that whenever you use header/footer views in a listview, your ListView gets wrapped with a HeaderViewListAdapter. You can fix this using the below code: ((YourAdapter)((HeaderViewListAdapter)lv.getAdapter()).getWrappedAdapter()).notifyDataSetChanged();
Use a category when there is lots of repetition that you expect to exploit. For example, suppose I want the aggregate size per exchange for a large table of trades. Using the default object is totally reasonable: In [6]: %timeit trades.groupby(‘exch’)[‘size’].sum() 1000 loops, best of 3: 1.25 ms per loop But since the list of … Read more