Re: Matplotlib with Django
Did you ever figure out how to do this? I am stuck with exactly the same problem that you first described i.e. how to allow the user to control the chart they are presented with. In my case I want to give them the ability to zoom, pan and select visible traces On Dec 26 2009, 12:27 pm, heaviside x wrote: > I have looked at POST via AJAX, but I started to steer away from it > after I read that a POST request is more for changing or updating data > in a database and GET is more for changing how the data is viewed. Is > my understanding wrong? Honestly, I am a python programmer who is > picking up web development as I go. > > In addition, I've been trying to implement this so it works without > javascript if necessary (I've read that this is the best practice if > possible). If I were to implement this w/out javascript with POST > wouldn't I need to pass all the parameters via the URL? > > How does youtube shorten their URLs? > > Finally, the code snippet your proposed would work, but what I was > trying to do by returning both an image and HTML in a request is > remove the separation between my two views. > > On Dec 26, 5:39 am, Hinnack wrote: > > > if you want to offer lots of properties one can change, POST via ajax is the > > better way - as you said > > long URLs can get very ugly - although you could shorten them like youtube > > or others do it. > > GET is far better at this point of time, as only GET requests are cachable > > (as far as I know) by djangos > > middleware. > > > if I understand you right: you want to mix html with image-data? That is > > impossible. But you can > > add parameters to the header of the http response of the image and put in > > there all settings needed to render the image... > > So you need 2 urls - although you could add a second variable to the url > > e.g. output: > > url(r'^graph_example/(?P\d+)/(?P\w+)/$') > > > and then a view: > > > def myview(request, id, output): > > if output == 'image': > > # output image data > > else: > > # output html data > > > 2009/12/26 heaviside x > > > > Hello, > > > > To start, this is not another how do I getmatplotlibto work in > > > Django thread. This is how do I getmatplotlibto work better with > > > django. Before I go on, let me outline what I'm doing. > > > > I'm currently working on a scientific data manager/viewer which uses > > >matplotlibas the primary graphing workhorse. My intention is to be > > > able to easily handle all sorts of crazy scientific plots (Smith > > > Charts, Polar Plots with negative values, and other crazy mappings). > > > In the past,matplotlibhas been able to easily and elegantly handle > > > these charts, so I'm sticking with it for now. I also want to be able > > > to take these generated plots and quickly dump them into documents or > > > reports so a save functionality (or drag and drop via the browser) is > > > key. > > > > Currently, my application is based off the standardmatplotlib > > > example. I have a webpage that contains a static graph.png image and > > > I point that url to another view that renders mymatplotlibpng and > > > returns it. > > > > url(r'^graph_example/(?P\d+)/$') > > > url(r'^graph_example/(?P\d+)/graph.png') > > > > How should I implement editable scales, titles, and labels? For > > > instance, the graph comes up but I want a different scaling for a > > > report. I could add all this information as url variables to the > > > view, but that would be extremely ugly. Is the simple solution a > > > query string? However, this also yields very ugly URLs. > > > > Instead of just returning an image in the HttpResposne as the django/ > > >matplotlibexample shows, is there a way to return the image with the > > > rest of the base page's response? Removing the need for hard coding a > > > "graph.png" url into my template. > > > > Any help would be greatly appreciated. > > > > -- > > > > You received this message because you are subscribed to the Google Groups > > > "Django users" group. > > > To post to this group, send email to django-us...@googlegroups.com. > > > To unsubscribe from this group, send email to > > > django-users+unsubscr...@googlegroups.com > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/django-users?hl=en. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: Matplotlib with Django
I have looked at POST via AJAX, but I started to steer away from it after I read that a POST request is more for changing or updating data in a database and GET is more for changing how the data is viewed. Is my understanding wrong? Honestly, I am a python programmer who is picking up web development as I go. In addition, I've been trying to implement this so it works without javascript if necessary (I've read that this is the best practice if possible). If I were to implement this w/out javascript with POST wouldn't I need to pass all the parameters via the URL? How does youtube shorten their URLs? Finally, the code snippet your proposed would work, but what I was trying to do by returning both an image and HTML in a request is remove the separation between my two views. On Dec 26, 5:39 am, Hinnack wrote: > if you want to offer lots of properties one can change, POST via ajax is the > better way - as you said > long URLs can get very ugly - although you could shorten them like youtube > or others do it. > GET is far better at this point of time, as only GET requests are cachable > (as far as I know) by djangos > middleware. > > if I understand you right: you want to mix html with image-data? That is > impossible. But you can > add parameters to the header of the http response of the image and put in > there all settings needed to render the image... > So you need 2 urls - although you could add a second variable to the url > e.g. output: > url(r'^graph_example/(?P\d+)/(?P\w+)/$') > > and then a view: > > def myview(request, id, output): > if output == 'image': > # output image data > else: > # output html data > > 2009/12/26 heaviside x > > > Hello, > > > To start, this is not another how do I get matplotlib to work in > > Django thread. This is how do I get matplotlib to work better with > > django. Before I go on, let me outline what I'm doing. > > > I'm currently working on a scientific data manager/viewer which uses > > matplotlib as the primary graphing workhorse. My intention is to be > > able to easily handle all sorts of crazy scientific plots (Smith > > Charts, Polar Plots with negative values, and other crazy mappings). > > In the past, matplotlib has been able to easily and elegantly handle > > these charts, so I'm sticking with it for now. I also want to be able > > to take these generated plots and quickly dump them into documents or > > reports so a save functionality (or drag and drop via the browser) is > > key. > > > Currently, my application is based off the standard matplotlib > > example. I have a webpage that contains a static graph.png image and > > I point that url to another view that renders my matplotlib png and > > returns it. > > > url(r'^graph_example/(?P\d+)/$') > > url(r'^graph_example/(?P\d+)/graph.png') > > > How should I implement editable scales, titles, and labels? For > > instance, the graph comes up but I want a different scaling for a > > report. I could add all this information as url variables to the > > view, but that would be extremely ugly. Is the simple solution a > > query string? However, this also yields very ugly URLs. > > > Instead of just returning an image in the HttpResposne as the django/ > > matplotlib example shows, is there a way to return the image with the > > rest of the base page's response? Removing the need for hard coding a > > "graph.png" url into my template. > > > Any help would be greatly appreciated. > > > -- > > > You received this message because you are subscribed to the Google Groups > > "Django users" group. > > To post to this group, send email to django-us...@googlegroups.com. > > To unsubscribe from this group, send email to > > django-users+unsubscr...@googlegroups.com > > . > > For more options, visit this group at > >http://groups.google.com/group/django-users?hl=en. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: Matplotlib with Django
if you want to offer lots of properties one can change, POST via ajax is the better way - as you said long URLs can get very ugly - although you could shorten them like youtube or others do it. GET is far better at this point of time, as only GET requests are cachable (as far as I know) by djangos middleware. if I understand you right: you want to mix html with image-data? That is impossible. But you can add parameters to the header of the http response of the image and put in there all settings needed to render the image... So you need 2 urls - although you could add a second variable to the url e.g. output: url(r'^graph_example/(?P\d+)/(?P\w+)/$') and then a view: def myview(request, id, output): if output == 'image': # output image data else: # output html data 2009/12/26 heaviside x > Hello, > > To start, this is not another how do I get matplotlib to work in > Django thread. This is how do I get matplotlib to work better with > django. Before I go on, let me outline what I'm doing. > > I'm currently working on a scientific data manager/viewer which uses > matplotlib as the primary graphing workhorse. My intention is to be > able to easily handle all sorts of crazy scientific plots (Smith > Charts, Polar Plots with negative values, and other crazy mappings). > In the past, matplotlib has been able to easily and elegantly handle > these charts, so I'm sticking with it for now. I also want to be able > to take these generated plots and quickly dump them into documents or > reports so a save functionality (or drag and drop via the browser) is > key. > > Currently, my application is based off the standard matplotlib > example. I have a webpage that contains a static graph.png image and > I point that url to another view that renders my matplotlib png and > returns it. > > url(r'^graph_example/(?P\d+)/$') > url(r'^graph_example/(?P\d+)/graph.png') > > How should I implement editable scales, titles, and labels? For > instance, the graph comes up but I want a different scaling for a > report. I could add all this information as url variables to the > view, but that would be extremely ugly. Is the simple solution a > query string? However, this also yields very ugly URLs. > > Instead of just returning an image in the HttpResposne as the django/ > matplotlib example shows, is there a way to return the image with the > rest of the base page's response? Removing the need for hard coding a > "graph.png" url into my template. > > Any help would be greatly appreciated. > > -- > > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-us...@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com > . > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > > > -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Matplotlib with Django
Hello, To start, this is not another how do I get matplotlib to work in Django thread. This is how do I get matplotlib to work better with django. Before I go on, let me outline what I'm doing. I'm currently working on a scientific data manager/viewer which uses matplotlib as the primary graphing workhorse. My intention is to be able to easily handle all sorts of crazy scientific plots (Smith Charts, Polar Plots with negative values, and other crazy mappings). In the past, matplotlib has been able to easily and elegantly handle these charts, so I'm sticking with it for now. I also want to be able to take these generated plots and quickly dump them into documents or reports so a save functionality (or drag and drop via the browser) is key. Currently, my application is based off the standard matplotlib example. I have a webpage that contains a static graph.png image and I point that url to another view that renders my matplotlib png and returns it. url(r'^graph_example/(?P\d+)/$') url(r'^graph_example/(?P\d+)/graph.png') How should I implement editable scales, titles, and labels? For instance, the graph comes up but I want a different scaling for a report. I could add all this information as url variables to the view, but that would be extremely ugly. Is the simple solution a query string? However, this also yields very ugly URLs. Instead of just returning an image in the HttpResposne as the django/ matplotlib example shows, is there a way to return the image with the rest of the base page's response? Removing the need for hard coding a "graph.png" url into my template. Any help would be greatly appreciated. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
