## Why are cookies sent with HTML page’s cross domain requests but not with JS’s XHR?

When we write a `HTML` page with `form` tag and an `action` attribute and a submit button. As soon as we click on submit a request is sent (with cookies) to the `URL` which was the value of `action` attribute.

But if we send cross domain request to the same domain with JS’s `XHR` cookies won’t be sent.

In both cases, requests are sent to another domain but still cookies are sent with the first case only why so?

## How to calculate the power spectrum and cross spectrum for two dimensional data?

I have two sets of data:

G={{G_1,x_1,y_1},{{G_2,x_2,y_2}},…..,{G_{n},x_n,y_n}}

H={{H_1,x_1,y_1},{{H_2,x_2,y_2}},…..,{H_{n},x_n,y_n}}

where H_{n} and G_{n} are values of G and H in the point (x_{n},y_{n}). I want to calculate the power spectrum and the cross spectrum . Can you help me ? Thanks.

## How to calculate the power spectrum and cross spectrum for two dimensional data?

I have two sets of data:

G={{G_1,x_1,y_1},{{G_2,x_2,y_2}},…..,{G_{n},x_n,y_n}}

H={{H_1,x_1,y_1},{{H_2,x_2,y_2}},…..,{H_{n},x_n,y_n}}

where H_{n} and G_{n} are values of G and H in the point (x_{n},y_{n}). I want to calculate the power spectrum and the cross spectrum . Can you help me ? Thanks.

## Iterate cartesian product (cross product) of sorted lists of positive numbers in order of decreasing product of entries (MVCE of a stub included)

Suppose I have several sorted lists of positive numbers, like so for example:

``double[] a1 = new double[]{0.70, 0.20, 0.10}; double[] a2 = new double[]{0.80, 0.10, 0.05, 0.05}; double[] a3 = new double[]{0.60, 0.15, 0.14, 0.10, 0.01}; ``

I want to iterate Cartesian product of these arrays in the order of decreasing product of entries, like so:

``0000: Combo[product=3.36e-01, vals=[0.70, 0.80, 0.60], indexes=[0, 0, 0]] 0001: Combo[product=9.60e-02, vals=[0.20, 0.80, 0.60], indexes=[1, 0, 0]] 0002: Combo[product=8.40e-02, vals=[0.70, 0.80, 0.15], indexes=[0, 0, 1]] 0003: Combo[product=7.84e-02, vals=[0.70, 0.80, 0.14], indexes=[0, 0, 2]] 0004: Combo[product=5.60e-02, vals=[0.70, 0.80, 0.10], indexes=[0, 0, 3]] 0005: Combo[product=4.80e-02, vals=[0.10, 0.80, 0.60], indexes=[2, 0, 0]] ... ``

E.g. in the example above the first entry is obvious (as arrays are sorted) and it is a combination of the first values: `[0.70, 0.80, 0.60]` with product `0.70*0.80*0.60 = 3.36e-01` and corresponding value indexes in arrays `a1, a2, a3` are `[0, 0, 0]`. Now the second entry is less obvious, should we change `0.70` to `0.20`? Or `0.60` to `0.15`? Or `0.80` to `0.10`? The second should be `[0.20, 0.80, 0.60]`with product `9.60e-02`, indexes `[1, 0, 0]`.

Here is a program in java to generate/print them: https://repl.it/repls/FilthyGreatRotation (all the logic is in `printWholeCartesianProduct()` method)
This program generates them in lexicographic order and then sorts the whole set by product.

Question: Is there an easy way to actually generate the combos in correct order in the first place?

The reason for this: I don’t have the lists in the first place, only iterators over some sorted collections of numbers. Possibly veeery long, length not known ahead of time, but it is known that the numbers in each iterator are sorted.

MVCE to play with (same as in https://repl.it link above):

``import java.text.DecimalFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.StringJoiner; import java.util.function.Consumer; import java.util.stream.Collectors;  public class Main {      public static void main(String[] args) {         List<List<Double>> data = createData();         printWholeCartesianProduct(data);     }      public static List<List<Double>> createData() {         double[] a1 = new double[]{0.70, 0.20, 0.10};         double[] a2 = new double[]{0.80, 0.10, 0.05, 0.05};         double[] a3 = new double[]{0.60, 0.15, 0.14, 0.10, 0.01};         return createData(a1, a2, a3);     }      public static void  printWholeCartesianProduct(List<List<Double>> data) {         final DecimalFormat df = new DecimalFormat("0.00");          // print input data         String matrix = data.stream()             .map(l -> l.stream().map(df::format).collect(Collectors.joining(", ")))             .map(row -> "[" + row + "]")             .collect(Collectors.joining("\n"));         System.out.println("Input data:\n" + matrix);          // collect combos as they are generated         final List<Combo> combos = new ArrayList<>();         Consumer<int[]> callback = indexes -> {             double[] v = new double[indexes.length];             double prod = 1;             for (int i = 0; i < indexes.length; i++) {                 List<Double> col = data.get(i);                 int index = indexes[i];                 v[i] = col.get(index);                 prod *= v[i];             }             combos.add(new Combo(prod, v, indexes.clone()));         };          // generate combos         int[] c = new int[data.size()];         int ptr = c.length - 1;         while (ptr >= 0) {             callback.accept(c);             c[ptr]++; // increment             if (c[ptr] == data.get(ptr).size()) { // carry                 do {                     ptr--;                 } while(ptr >= 0 && c[ptr] == data.get(ptr).size() - 1);                 if (ptr < 0) {                     break;                 }                 c[ptr]++;                 // zero out                 while (++ptr <= c.length - 1) {                     c[ptr] = 0;                 }                 ptr = c.length - 1;             }         }          // cheating - sort after generation and print result         combos.sort((o1, o2) -> Double.compare(o2.product, o1.product));         StringBuilder sb = new StringBuilder();         double totalP = 0;         for (int i = 0; i < combos.size(); i++) {             sb.append(String.format("%04d: ", i)).append(combos.get(i)).append("\n");             totalP += combos.get(i).product;         }         System.out.printf("Cartesian product in descending product (total p=%.3e):\n%s", totalP, sb.toString());     }      public static List<Double> asList(double[] a) {         return Arrays.stream(a).boxed().collect(Collectors.toList());     }      public static List<List<Double>> createData(double[]... arrays) {         final List<List<Double>> vals = new ArrayList<>();         Arrays.stream(arrays).forEachOrdered(a -> vals.add(asList(a)));         return vals;     }      static class Combo {         final double product;         final double[] vals;         final int[] indexes;          Combo(double product, double[] vals, int[] indexes) {             this.product = product;             this.vals = vals;             this.indexes = indexes;         }          @Override         public String toString() {             return new StringJoiner(", ", Combo.class.getSimpleName() + "[", "]")                 .add("product=" + String.format("%.2e", product))                 .add("vals=[" + Arrays.stream(vals).boxed().map(v -> String.format("%.2f", v)).collect(                     Collectors.joining(", ")) + "]")                 .add("indexes=" + Arrays.toString(indexes))                 .toString();         }     } } $$```$$ ``

## How to define a cross product of two orthogonal vectors?

t[s],n[s] and b[s] are three orthogonal vectors. I define a cross product Cross[t[s], n[s]] = b[s]. I want to calculate the cross product in the formula a2, I want a2 to have the same result as a3. How to achieve this?

## Retrieve SP-List data cross domain via SPServices?

I am trying to retrieve data from a SharePoint List hosted in a different server/domain. We are still running SP 2010 but about to migrate to 2013. I am not sure if jQuery.SPServices and CORS are the way to go ahead. Any solution?

## Error: “Forbidden” while accessing cross site lists using REST API in SPD 2013 workflows

I am not able to access the cross site lists using REST API in SharePoint Designer 2013 Workflow. I am making a call using action “Call HTTP Web Service”. I am facing the error in responseCode variable like “Forbidden”.

## SharePoint Images Of Staff Members Not Showing (Just Black Square with White Cross)

I have recently tried to create a staff contact List in a SharePoint OnLine Enviroment/Site.

The List has been created fine and all works apart from the Staff Picture field. The URL addresses for the images are correct but all we can get are black squares with white crosses.

My original thought was that the images maybe too large, but I ruled this out by changing a member of staff’s image to something very small. The problem still stayed.

## SharePoint Images Of Staff Members Not Showing (Just Black Square with White Cross)

I have recently tried to create a staff contact List in a SharePoint OnLine Enviroment/Site.

The List has been created fine and all works apart from the Staff Picture field. The URL addresses for the images are correct but all we can get are black squares with white crosses.

My original thought was that the images maybe too large, but I ruled this out by changing a member of staff’s image to something very small. The problem still stayed.

## Sharepoint Online cross site lookup schema.xml for field extension

I try to create a cross site Lookup field extension for Sharepoint Online. The Field extention is working perfectly, as long as both lists are at the same Website but I need it to work cross site. From my research I found out that this is possible by changing the xml schema of the field. Multiple sources told me that I need to set LookupWebID and LookupList. But I still seem to have set something wrong: This is my current schema:

``<Field ID="{0d83954e-ca61-4b52-aa54-583d2574eb9e}"  Name="SPFxKontaktLookUp" DisplayName="KontaktLookUp" StaticName="KontaktLookUp"  Type="LookupMulti" Required="FALSE" EnforceUniqueValues="FALSE"  LookupList="{a83b0470-f97f-4a64-9aa2-931864743466}"  LookupWebId="{9c844c0e-183d-4f4a-8f2d-f0e662ce1e4a}" LookupField="Title"   Group="SPFx Columns" ClientSideComponentId="c8e6469b-9213-4fb5-95fe-58f7836075e0"  SourceID="{9c844c0e-183d-4f4a-8f2d-f0e662ce1e4a}" AllowDeletion="TRUE" ColName="int1"  RowOrdinal="0" Version="26" />" ``

The guid of the target web is: 9c844c0e-183d-4f4a-8f2d-f0e662ce1e4a and the guid of the target List is: a83b0470-f97f-4a64-9aa2-931864743466

I also tryed changing “LookupList” to “List” and “LookupField” to “ShowField” but that didn’t work. Can someone tell me what I’m doing wrong ?