This method is called fancy indexing. It creates copies not views. When a new array is created by indexing with an array of integers, the new array has the same shape as the array of integers:. Creating arrays Basic data types Basic visualization Indexing and slicing Copies and views Fancy indexing. What are NumPy and NumPy arrays?
MRI scan …. In : np. Exercise: Simple arrays Create a simple two dimensional array. First, redo the examples from above. And then create your own: how about odd numbers counting backwards on the first row, and even numbers on the second? Use the functions len , numpy. How do they relate to each other? And to the ndim attribute of the arrays?
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Exercise: Creating arrays using functions Experiment with arange , linspace , ones , zeros , eye and diag. Create different kinds of arrays with random numbers. Try setting the seed before creating an array with random values. Look at the function np. What does it do? When might this be useful?
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Tip Different data-types allow us to store data more compactly in memory, but most of the time we simply work with floating point numbers. See also More in the: matplotlib chapter. Exercise: Simple visualizations Plot some simple arrays: a cosine as a function of time and a 2D matrix. Try using the gray colormap on the 2D matrix. Note In 2D, the first dimension corresponds to rows , the second to columns. Exercise: Indexing and slicing Try the different flavours of slicing, using start , end and step : starting from a linspace, try to obtain odd numbers counting backwards, and even numbers counting forwards.
Exercise: Array creation Create the following arrays with correct data types : [[ 1 , 1 , 1 , 1 ],. Exercise: Tiling for array creation Skim through the documentation for np. Skip j which are already known to not be primes The first number to cross out is. Exercise: Fancy indexing Again, reproduce the fancy indexing shown in the diagram above.
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Use fancy indexing on the left and array creation on the right to assign values into an array, for instance by setting parts of the array in the diagram above to zero. Now it will remain on until you manually disable it. This is great to clean up any mess you may have. If you want to quickly jump around you arrangement or pattern depending on the playback mode , then use the song position slider in the top toolbar. If you want the playhead to follow along with the song or pattern, click that arrow in the toolbar at the top to enable Auto Scrolling.
Now the display with follow wherever the playhead goes. Ever worked on a collab with your producer friends, but have experienced the insufferable headache of lost files? What if I told you that you can send everything that you need in one folder? Here are a few pointers to speed up your workflow and encourage new ideas. Right-click on the browser to expand all the folders or collapse all if there are some open. This can help to explore or clean up the browser. Use the up and down arrow keys to navigate through sounds.
Use the right arrow key to play the currently-selected sound back. Clicking and dragging will create a sampler. Press a number from to select a snapshot of the browser.
Press the currently selected number again to save the current state of the browser to that snapshot. This allows for faster navigation of commonly-used areas in the browser. Hide the browser by dragging the right side of the window all the way to the left. Pull it back out to the right to show it again. The browser can be moved around easily by clicking and dragging. In doing so, it will snap to the side of the screen you prefer it on.
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Use L to quickly switch between Pattern and Song playback modes. Click on a previous one to automatically undo all actions between them. Want to move back to a much older version of your track but forgot to save? Simply press Backup and select the relevant autosave of your project. All the mixing mistakes your made are suddenly gone.
Here you can add new folders in the folder list, and they will subsequently show in the browser.
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Simply hold shift to add the sample to the selected track in the Channel Rack while browsing. There are 3 respective folders towards the top, each with some great default options to play around with. For a lot of producers, most creative work happens in the Channel Rack. So here are some useful tricks you can use in your next production session. Got some unused audio clips you removed from the arrangement? Right click on a channel and select Fill each 2, 4 or 8 steps to automatically fill those rhythmic intervals without clicking and moving the mouse.
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This can help to clean up sounds that might be overlapping and creating mud in your tracks. This saves presets for your instruments and effects right within FL Studio, and puts them in the browser. In the sampler, you can reverse sounds by navigating to the Precomputed effects section and by enabling Reverse.
This can achieve some interesting sounds depending on the source material.
Also in the sampler, you can experiment with time stretching by adjusting the mode, pitch shift and time stretch controls. This is a creative way to mangle audio right within the sampler instead of loading up an Edison instance. Use the Graph Editor by clicking on the graph icon in the top right of the Channel Rack.
Here you can adjust velocity, pitch, pan, note values and much more right from the step sequencer — without having to open the Piano Roll. You can easily add an amount of swing to your patterns by dialing in the swing knob. This adds more of a groovy feel to the rhythm and works great in genres like house, garage and hip-hop. A good use of this is to move less important elements to the bottom if they are taking up space. Sometimes you just want a particular sound to be always playable on your keyboard, regardless of what is selected.
Maybe a piano to check the key of things, or simply to jam over the top of something. The computer keyboard will always play that track, until you go back to the menu and select unlock. Really neat. When you load up a sample into a sampler channel, up the top there is an envelope icon.
Want to move between patterns using just the keyboard. If there is no next pattern, it will create a new one automatically.
http://theranchhands.com/images/novel/those-crazy-nudists-vol-1-nudist-photo-compendium.php This will bounce it into the Audio section of the Channel rack, and you can paste it straight into the Playlist. Now any notes you add to that track will trigger both instruments. You can get some really unique sounds from this thing, no matter what genre you make. Just load up an audio sample, tweak away and listen to the results. As part of the Channel Rack, the Piano Roll is a very important tool. It could be where you write the hook for your next big track — who knows?