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.
Related
I have an SSRS Line chart which plots supply points with square feet on the X axis and Price on the Y axis. Right now I don't really care about making it pretty just getting the lines to show up correctly. I am plotting the points and grouping by Subdivision/Builder.
So for example Subdivision A has builders Y and Z. I want to show different colors and lines for Subdivision A builder Y verses Subdivision A Builder Z.
The problem is that the lines are not connecting when a point for another subdivision builder combination breaks up that line.
The grey line and points below are not all connected as the yellow point is between the grey points so the grey line is not connected to all grey points.
How can I make the points of the same color (same Subdivision/Builder) connected via a line?
As I found out the hard way recently, this problem is often caused by null values in the data not being properly handled by SSRS. Without seeing your data, I can't be certain that's the cause, but nulls were the culprit I encountered the same behavior.
The solutions usually involve assigning values to the color of the EmptyPoint property on the Series, sometimes in conjunction with setting the EmptyPointValue to specify null handling. I've found many references to this problem on the web, but I'll only post links to the best two, both of which are on StackExchange:
The thread SSRS Line Chart NULL VALUE - Horizontal Line contains a thorough discussion of this issue. The usual workaround given is to hard-code a color expression for each line using an IIf, but sometimes this isn't an option, especially if the field you're grouping on has dynamic, unpredictable values, as my dataset did.
The picture posted there depicts clear examples of the same type of line breaks. The user named trubs posted a code sample which illustrates how to set the EmptyPoint, in case where an Iif will work:
=iif(isNothing(Fields!SelectedValue.Value),'No Color',"LightBlue")
The first reply in SSRS Line Chart Not Connecting Data Points details a workaround for cases when the EmptyPoint value & nulls are the root cause and simple hard-coded IIfs won't do the trick. Although I have yet to get my line colors to match the point markers the way I'd like, I can verify that this solution at least gives you your lines back and allows you to assign a variety of colors to them. It's fairly simple and involves merely pasting in some VB code for a couple color properties.
I was asked in the comments section to provide the details of the solutions, but don't want to plagiarize, so I'll simply do a long direct quote of JohnBob's answer:
Firstly, in order to get the lines to join up, you need to set the
EmptyPoint colour for the series.
Select your series in your chart In the properties tab (not the
dialog) drill down into the EmptyPoint property and set the colour to
be Black
This will get them joining up - yay! But part of the line is colour
and the other part is black, right? That's a bit silly, especially
considering if you leave the colour to Automatic on the EmptyPoint
that it will be transparent.
So, then we need to get the series and the EmptyPoint's colours in
sync. Using code from here. I added some code to the code of the
report.
1). Right click on an empty space on the report and select "Report
Properties" 2). In the code tab, paste the following:
Private colorPalette As String() = {"#418CF0", "#FCB441", "#E0400A", "#05642E", "#1A3B69", "#BFBFBF", "#E0400A", "#FCB441", "DarkBlue", "Tomato", "Orange", "CornflowerBlue", "Gold", "Red", "Green", "LightBlue", "Lime", "Maroon", "LightSteelBlue", "Tan", "Silver"}
Private count As Integer = 0
Private mapping As New System.Collections.Hashtable()
Public Function GetColor(ByVal groupingValue As String) As String
If mapping.ContainsKey(groupingValue) Then
Return mapping(groupingValue)
End If
Dim c As String = colorPalette(count Mod colorPalette.Length)
count = count + 1
mapping.Add(groupingValue, c)
Return c
End Function
Then we need to call this code when setting the colour of the series
and of the EmptyPoint.
Select your series
In the properties tab paste something the following (replace WhateverTheGroupIsForYourSeries with your series group name):
=Code.GetColor(Fields!*WhateverTheGroupIsForYourSeries*.Value)
Drill down to the color element of the EmptyPoint Series property
Paste the same text as from point two [e.g. =Code.GetColor(Fields!*WhateverTheGroupIsForYourSeries*.Value)]
And voila! You're done! I can't believe how unnecessarily difficult
this is :D
I hope this helps.
Just put your Fields!(YourSeriesGroup).Value in Series Groups to above of
Fields!(YourCategoryGroup).Value in Category Groups, your series group should be in both Series Groups and Category Groups (should be above of your initial category group).
And after that right click horizontal axis and select Horizontal Axis Properties. Set Axis Type to Scalar and click OK.
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
The assignment is to construct a two-column table that starts at x= -4 and ends with x= 5 with one unit increments between consecutive x values. It should have column headings ‘x’ and ‘f(x)’. I can't find anything helpful on html.table(), which is what we're supposed to use.
This what I have so far. I just have no idea what to put into the html.table function.
x = var('x')
f(x) = (5 * x^2) - (9 * x) + 4
html.table()
You might want to have a look at sage's reference documentation page on html.table
It contains the following valuable information :
table(x, header=False)
Print a nested list as a HTML table. Strings of html will be parsed for math inside dollar and double-dollar signs. 2D graphics will be displayed in the cells. Expressions will be latexed.
INPUT:
x – a list of lists (i.e., a list of table rows)
header – a row of headers. If True, then the first row of the table is taken to be the header.
There is also an example for sin (instead of f) with x in 0..3 instead of -4..5, that you can probably adapt pretty easily :
html.table([(x,sin(x)) for x in [0..3]], header = ["$x$", "$\sin(x)$"])
#Cimbali has a great answer. For completeness, I'll point out that you should be able to get this information with
html.table?
or, in fact,
table?
since I would say we want to advocate the more general table function, which has a lot of good potential for you.
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.
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)