René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Display Connection Matrix","articleBody":"Hi,\r\n\r\nI wanted to expand on #925 and display a sparse graph of all the system connections, some of which had the same signal name, which is a case I found the new connection table feature a bit confusing for so I wrote this short function to display the connection matrix directly using matplotlib imshow.\r\n\r\n```python\r\ndef make_connection_plot(self):\r\n    iinx = {}\r\n    oinx = {}\r\n    sinx = {} \r\n\r\n    # Go through the system list and keep track of counts, offsets\r\n    for sysidx, sys in enumerate(self.syslist):\r\n\r\n        for st in range(sys.nstates):\r\n            iinx[ max(iinx.keys())+1 if iinx else 0 + st] = f'{sys.name}.{sys.state_labels[st]}'\r\n        for st in range(sys.noutputs):\r\n            oinx[ max(oinx.keys())+1 if oinx else 0 +st] = f'{sys.name}.{sys.output_labels[st]}'\r\n        for st in range(sys.ninputs):\r\n            sinx[max(sinx.keys())+1 if sinx else 0 +st] = f'{sys.name}.{sys.input_labels[st]}'\r\n\r\n    cmm = self.connect_map.copy()\r\n    cmm[cmm==0] = np.nan\r\n    imshow(cmm)\r\n    grid()\r\n    title(f'Connection Map: {self.name}')\r\n    xticks(ticks=list(oinx.keys()),labels=list(oinx.values()),rotation=90)\r\n    yticks(ticks=list(sinx.keys()),labels=list(sinx.values()))\r\n    xlabel('Outputs')\r\n    ylabel('Inputs')\r\n    \r\n    tight_layout()\r\n```\r\n\r\nThis code results in this plot, displaying the gain via color as well as the scoped input and output names.\r\n![Connectionmap](https://github.com/python-control/python-control/assets/10334493/d88c8192-5ca9-4b46-bc3b-6b57de1227d3)\r\n\r\n\r\n","author":{"url":"https://github.com/SoundsSerious","@type":"Person","name":"SoundsSerious"},"datePublished":"2024-01-21T03:53:21.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/963/python-control/issues/963"}