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Is there in HTML 5 filtering language or some analog of filter language? Something like GLSL / HYDRA / HLSL or just JS pixel filter/shader lib?
Started by Ole Jak on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Good....
You'll probably have to come up with a hybrid of SVG/VML/ActiveX/Canvas and JS or just use Java .
You certainly won't find anything standard that will work with IE .
No, the closest thing to what you want is SVG filters, or perhaps canvas+JS.
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I have a a low pass filter described by the following transfer function:
h[n] = (w_c/Pi) * sinc( n * w_c / Pi ), where is w_c is the cutoff frequency
I have to convert this low-pass filter to a band-pass filter.
Started by Alceu Costa on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Let f[n] be the signal you get from the low-pass... .
Note : such a filter will not be symmetric about 0, which means it will have get:
h_bandpass[n] = h[n]cos(w_offset*n)
This filter then has purely real values.
Transform for more details.
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Hello everyone!
Could anyone explain the difference between filter and filter_by functions in SQLAlchemy? I am confused and can't really see the difference. Which one should I be using?
Thanks, Boda Cydo
Started by bodacydo on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
filter_by is used for simple queries on the column names like
db.users.filter_by(name='Joe')
The same can be accomplished with filter by writing
db.users.filter(db.users.name=='Joe')
but you can also', db.users.country=='England'))
filter....
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I'm using sphinx to list me some items from my database here. It's almost 100%, I just haven't figured out yet how to create an OR between two different filters. For example:
My Object in the database has a starting and an ending date, I can filter(starting...
Started by Tiago on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
If it's the same.
Sets of values you want to match against - and filter on arrays of values.
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Django's manager docs has a paragraph overwritten with DO NOT FILTER AWAY ANY RESULTS IN THIS TYPE OF MANAGER SUBCLASS , but in the following text only mentions get_query_set()
Is it save to filter in all(), get(), filter(), exclude()?
The reason why ...
Started by vikingosegundo on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
I did some test and will answer my own question:
Do not filter() or filter() , you will eventually run into a situation where you want to retrieve some particular.
The admin app).
By other apps (i.e.
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Grails provides filters that run before your controllers. They're defined in classes that look like this:
class SecurityFilters { def filters = { myFilter(controller:'*', action:'*') { // What are those weird colons?? print "I'm filtering!" // Code that...
Started by Douglas Squirrel on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Controller:'*', action:'create'
This would mean that any time, or edit no filter would execute....
* means apply this filter to any object of the proceeding we would use the following filter.
Arguments, a controller and action pattern.
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I have an issue with the django-filter application: how to hide the items that will produce zero results. I think that there is a simple method to do this, but idk how.
I'm using the LinkWidget on a ModelChoiceFilter, like this:
provider = django_filters...
Started by mdgart on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Should probably encapsulate those two calls into more-efficient method on filter..
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Hello all.
Note: I take care of SQL injection and output escaping elsewhere - this question is about input filtering only, thanks.
I'm in the middle of refactoring my user input filtering functions. Before passing the GET/POST parameter to a type-specific...
Started by djn on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
The only why to know if your.
Your filter
There are many different approaches to XSS that are secure.
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I would like to hear your opinion about this.
I have a django application, where the data obtained from the model are rough. To make them nicer I have to do some potentially complex, but not much, operation. An example, suppose you have a model where ...
Started by Stefano Borini on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
A filter is meant to be more generic - formatting and displaying data rather than lookups.
To make a filter, and I don't think most Django developers would expect that sort of thing in a filter.
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Hi guys,
i'm having some issues getting the .Filter() method to work in subsonic, and i'm constantly getting errors like the one below:
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Line 36: bool...
Started by Doug on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
ObjTopLevelCol = objNavigation.Where(nav => nav.NavHigherID == 0);
Filter is designed to work on a collection - is "objNavigation" a collection? The problem you're running into is that the criteria for Filter() can't be met with the....
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