I'm here with a new question.
I'm making a custom algorithm that need precomputed data for the graph edges. I use the AllEdgesIterator like this :
AllEdgesIterator it = graph.getAllEdges();
int nbEdges = it.getCount();
int count = 0;
int[] myData = new int[nbEdges];
while (it.next())
{
count++;
...
}
The first weird thing is that nbEdges is equal to 15565 edges but count is only equal to 14417. How is it possible ?
The second weird thing is when I run my custom A* : I simply browse nodes using the outEdgeExplorer but I get an IndexOutOfBound at index 15569 on myData array. I thought that the edge indexes were included in [0 ; N-1] where N is the number of edges, is it really the case ?
What could be happening here ? By the way, I have disabled graph contraction hierarchies.
Thank you for answering so fast every time !
The first weird thing is that nbEdges is equal to 15565 edges
but count is only equal to 14417. How is it possible ?
This is because of the 'compaction' where unreachable subnetworks are removed, but currently only nodes are removed from the graph the edges are just disconnected and stay in the edges-'array' marked as deleted. So iter.getCount is just an upper limit but the AllEdgeIterator excludes such unused edges correctly when iterating and has the correct count. But using iter.getCount to allocate your custom data array is the correct thing to do.
Regarding the second question: that is probably because the QueryGraph introduces new virtual edges with a bigger edgeId as iter.getCount. Depending on the exact scenario there are different solutions like just excluding or using the original edge instead etc
Related
What DataSetIterator should I use in order to create a DataSet object that contains miultiple features and labels? I have only seen examples similar to 'Iris example' where there is only one label and it is known how many different labels there are. In my problem there are four labels (position X, position Y, width and height of a shape) and many features (pixels values) and it's impossible to calculate how many different labels there could be.
I want something like this
RecordReader recordReader = new CSVRecordReader(0, ',');
recordReader.initialize(new FileSplit(new File(fileName)));
DataSetIterator iterator = new CustomDataSetIterator(recordReader, numRows, numFeatures, numLables);
DataSet allData = iterator.next();
Using data that looks like this
feature0;feature1;feature2;feature3;label0;label1;
I know that this question seems very basic and it is but I really had hard time finding any information about this topic in official tutorials or in documentation.
it seems like you are looking for an object detection kind of data with bounding boxes an multiple possible objects in your picture.
take a look at this example for that: https://github.com/eclipse/deeplearning4j-examples/blob/master/dl4j-examples/src/main/java/org/deeplearning4j/examples/convolution/objectdetection/HouseNumberDetection.java
in general there is a MultiDataSet that can take multiple inputs and can have multiple outputs.
We are using the following code (generated by php but finally this is on client side)
c3.generate({'bindto':'#b65d3422__salestaffcommunication_xepan_base_view_chart_chart','data':{'keys':{'x':'name','value':['Email','Call','Meeting']},'groups':[['Email','Call','Meeting']],'json':[],'type':'bar'},'axis':{'x':{'type':'category'},'rotated':true},'onrendered':function(ev,ui){$(".widget-grid").masonry({'itemSelector':'.widget'})}});
c3.generate({'bindto':'#f67e14d8__t_masscommunication_xepan_base_view_chart_chart','data':{'keys':{'x':'name','value':['Newsletter','TeleMarketing']},'groups':[['Newsletter','TeleMarketing']],'json':[],'type':'bar'},'axis':{'x':{'type':'category'},'rotated':true},'onrendered':function(ev,ui){$(".widget-grid").masonry({'itemSelector':'.widget'})}});
c3.generate({'bindto':'#517df254__ableworkforce_xepan_base_view_chart_chart','data':{'columns':[['present',11.111111111111]],'type':'gauge'},'color':{'pattern':['#FF0000','#F97600','#F6C600','#60B044'],'threshold':{'values':[30,60,90,100]}},'onrendered':function(ev,ui){$(".widget-grid").masonry({'itemSelector':'.widget'})}});
And last graph is not drawn. showing
SyntaxError (DOM Exception 12): The string did not match the expected pattern.
However, I can run ANY two and it works fine. that means all code is perfect but once second one is drawn ( no matter in which order). Third one doesn't draws.
Is it any known bug, or any workaround known.
Using v0.4.11 of c3 from c3js.org
Here is my jsfiddle
https://jsfiddle.net/2yy2mjaf/1/
Thank you.
IDs cannot start with a number, which is the case of your third ID.
The simple solution is just adding a letter to it:
'bindto':'#a517df254_ //just put an "a" before the number here
Here is your fiddle: https://jsfiddle.net/7dkLdg32/
That i want to do is to delete certain rows (or columns doesn't really mater...) from a given vector.
By going through Simulink's components found out that there is nothing performing such an operation,there are blocks help one add elements but nothing clearly for removing,so ended up trying to delete them by using a function block and following the online examples that demonstrate the usage of "[]".Lets say that i want to delete the second column of the vector u,i do u(:, 2) = [];.
That works absolutely fine in a separate m file or function but unfortunately not in a function block returning:
"Simulink does not have enough information to determine output sizes for
this block. If you think the errors below are inaccurate, try specifying
types for the block inputs and/or sizes for the block outputs."
and:
Size mismatch (size [4 x 4] ~= size [4 x 3]).
The size to the left is the size of the left-hand side of the assignment.
Function 'MATLAB Function' (#107.41.42), line 4, column 1:
"u"
Launch diagnostic report.
Is there any alternative you can suggest to remove several elements in a given vector in Simulink?
Thanks in advance
George
Finally,managed to do it without function block.There is a much easier way,by using Pad,and defining the output vector to be shorter than the input resulting in truncation.
Following up on a previous question... I've got my minimal horizon chart example much more minimaler than before ( minimal cubism.js horizon chart example (TypeError: callback is not a function) )
<body>
<div class="mag"></div>
<script type="text/javascript">
var myContext = cubism.context();
var myMetr = myContext.metric(function(start, stop, step, callback) {
d3.json("../json/600s.json.php?t0=" + start/1000 + "&t1=" + stop/1000 + "&ss=" + step/1000, function(er, dt) {
if (!dt) return callback(new Error("unable to load data, or has NaNs"));
callback(null, dt.val);
});
});
var myHoriz = myContext.horizon()
.metric(myMetr);
d3.select(".mag")
.call(myHoriz);
</script>
</body>
The d3.json() bit calls a server side .php that I've written that returns a .json version of my measurements. The .php takes the start, stop, step (which cubism's context.metric() uses) as the t0, t1, and ss items in its http query string and sends back a .json file. The divides by 1000 are because I made my .php expect parameters in s, not ms. And the dt.val is because the actual array of my measurements is in the "val" member of the json output, e.g.
{
"other":"unused members...",
"n":5,
"val":[
22292.078125,
22292.03515625,
22292.005859375,
22292.02734375,
22292.021484375
]
}
The problem is, now that I've got it pared down to (I think) the bare minimum, AND I actually understand all of it instead of just pasting from other examples and hoping for the best (in which scenario, most things I try to change just break things instead of improving them), I need to start adding parameters and functions back to make it visually more useful.
Two problems first of all are, this measurement hovers all day around 22,300, and only varies +/- 10 maybe all day, so the graph is just a solid green rectangle, AND the label just says constantly "22k".
I've fixed the label with .format(d3.format(".3f")) (versus the default .2s which uses SI metric prefixes, thus the "22k" above).
What I can't figure out is how to use either axis, scale, extent, or what, so that this only shows a range of numbers that are relevant to the viewer. I don't actually care about the positive-green and negative-blue and darkening colours aspects of the horizon chart. I just used it as proof-of-concept to get the constantly-shifting window of measurements from my .json data source, but the part I really need to keep is the serverDelay, step, size, and such features of cubism.js that intelligently grab the initial window of data, and incrementally grab more via the .json requests.
So how do I keep the cubism bits I need, but usefully change my all-22300s graph to show the important +/- 10 units?
update re Scott Cameron's suggestion of horizon.extent([22315, 22320])... yes I had tried that and it had zero effect. Other things I've changed so far from "minimal" above...
var myHoriz = myContext.horizon()
.metric(myMetr)
.format(d3.format(".2f"))
.height(100)
.title("base1 (m): ")
.colors(["#08519c", "#006d2c"])
// .extent([22315, 22320]) // no effect with or without this line
;
I was able to improve the graph by using metric.subtract inserting it above the myHoriz line like so: (but it made the numerical label useless now):
var myMetr2 = myMetr.subtract(22315);
var myHoriz = myContext.horizon()
.metric(myMetr2)
.format...(continue as above)
All the examples seem so concise and expressive and work fine verbatim but so many of the tweaks I try to make to them seem to backfire, I'm not sure why that is. And similarly when I refer to the API wiki... maybe 4 out of 5 things I use from the API work immediately, but then I always seem to hit one that seems to have no effect, or breaks the chart completely. I'm not sure I've wrapped my head around how so many of the parameters being passed around are actually functions, for one thing.
Next hurdles after this scale/extent question, will be getting the horizontal time axis back (after having chopped it out to make things more minimal and easier to understand), and switching this from an area-looking graph to more of a line graph.
Anyway, all direction and suggestion appreciated.
Here's the one with the better vertical scale, but now the numerical label isn't what I want:
Have you tried horizon.extent? It lets you specify the [min, max] value for the horizon chart. By default, a linear scale will be created to map values within the extent to the pixels within the chart's height (specified with `horizon.height or default to 30 pixels).
I'm having a bit of trouble removing commas from an array when I go to write it to a cell in google spreadsheets. array.join(''); doesn't seem to do the trick. I would appreciate any help. Also, anchor[i][j].join('') returns an error.
Here is a bit of code:
anchor[i][j].join('') returns an error
anchor[i].join('') doesn't seem to have an effect.
for (var i=0; i(less than) rangeKW.length-2;i++){
anchor[i] = [];
for (var j=0; j<rangeURL.length;j++){
anchor[i][j] = ahref + rangeKW[i] + ahref1 + rangeURL[j] + "</a>|";
}
}
cell.setValue("{" + anchor);
}
Suppose you have
var x = [[1,2,3],[4,5,6]]
Then either of these lines will give you "123456":
Array.prototype.concat.apply([], x).join('')
x.map(function(a){ return a.join(''); }).join('');
The first one constructs the array [1,2,3,4,5,6] and then joins it. The second one joins each inner array first, constructing ["123", "456"] and then joins that. I think the first one is likely to be a tiny bit more efficient, although we are talking peanuts here, but the second one gives you a bit more control if you want to put something different between rows and columns.
In both cases, this doesn't change the original value in x. You can assign the new value to x if that's what you want.
array.join() works with "normal" arrays, by normal I mean 1 dimension and applies to the array itself, not on an single element (error on [i][j]), beside that I don't really understand what you want to do and how your code is related to your question ...
concerning anchor[i].join('');// doesn't seem to have an effect. I don't know how many elements are in there and how they look like but the syntax is correct. You can also use toString() if you want to make it a CSV string.
EDIT : (thanks for the information in comments.)
I think the easiest way (or at least the most clear) would be to create a couple of new variables that you could log separately to see exactly what happens.
for example
var anchorString = anchor[i].join(); // or toString() they both return strings from 1D arrays
Logger.log(anchorString)
if every index i of anchor have to be in the same cell then write it like this in the i-loop :
var anchorString += anchor[i].join();
Logger.log(anchorString)