# Tag Info

Mathematica can also connect to Neo4J via the REST API. Instructions for use on OS X: 1. Install Neo4j 2. start the webserver $sudo apachectl start 3. start ... • 36.9k 14 votes ### Graph databases / Nosql with Mathematica For MongoDB instead of using the Rest interface using urls as suggested by Mike, you can use the Java driver. Here's the proof of concept that should allow a lot of fruitful things ... I'm still ... • 10.7k 12 votes ### Graph databases / Nosql with Mathematica I have an open-source MongoDB Mathematica driver here: https://github.com/zbjornson/MongoDBLink. There are quick setup instructions and an overview in the readme. It's built on the official Java ... • 1,168 12 votes ### Graph databases / Nosql with Mathematica Here is one example of how to create a neo4j connection using JDBC driver from this git. The steeps are: 1- Put the JAR file (neo4j-jdbc-2.0.1-SNAPSHOT-jar-with-dependencies.jar) together with other ... • 25.3k 9 votes ### How to use Mathematica in AWS cloud? Install version 11.3 of the player, write your script.wl and run wolframscript -f script.wl If you want a GUI check https://... • 1,970 8 votes Accepted ### Font style in Mathematica matching \mathcal and \mathbf in Miktex I think what you want is script style. You can enter letters in that style in two ways: For example, \[ScriptCapitalT]$\mathcal{T}$or alternatively by the ... • 95.2k 7 votes Accepted ### How to label Ticks in ListDensityPlot Is this what you had in mind? ... • 533 7 votes ### Contour plot with points and line together Inspired by @eldo's ContourLabels, a variation that gives color-coded points for labels: ... • 349k 6 votes ### Graph databases / Nosql with Mathematica Wolfram Language version 11.3 now has support for interfacing with MongoDB. You can connect to a MongoDB database via MongoConnect. For example, connecting to a ... • 3,469 6 votes Accepted ### Creating REST Web Service with webMathematica After @Hans comment, get much more clear how to do it in webMathematica. It could't be simpler. IMO, the best way to see how it works, after install webMathematica, is going into: ... • 25.3k 6 votes Accepted ### Build API without the WolframCloud? Currently APIFunction / CloudDeploy works only with the Public Cloud or an Enterprise Private Cloud. So either you need an EPC ... 6 votes ### How to put a loop in a loop Define random using SetDelayed so that each time it is used it gives a different random vector: ... • 349k 6 votes Accepted ### Jacobian matrix evaluation at a point Let f be a vector function: f[x_, y_] := {f1[x, y], f2[x, y]}; Then the Jacobian is the matrix valued function: D[f[x, y], {{x, y}}] and the Jacobian at point {a,b} is: ... • 24.9k 5 votes ### Computing the first derivative in x, y ,and z I believe this is a duplicate. I just note that Grad can provide all the partial derivatives in one step. I just post this not to encourage all multiple rule lists ... • 55.1k 5 votes ### Implementing a 100% Mathematica http server This is node.js that creates a local server if you are experimenting. Again this isn't legal to use on something other then a local port. ... • 61 5 votes Accepted ### How to make a matrix that had diffrentation without functions One possiblity is to define the function d as: d = {{D[#, x], 0}, {0, D[#, y]}, {D[#, x], D[#, y]}} & To apply this operator to a particular function: ... • 65.7k 5 votes ### Jacobian matrix evaluation at a point You can do it as follows: Vector field: F[{x_, y_}] := Evaluate[{f1[x, y], f2[x, y]}] X = {x, y}; X0 = {a, b}; The Jacobian Matrix: ... • 4,383 4 votes ### Contour plot with points and line together ... • 34.5k 4 votes Accepted ### Contour plot with points and line together data = Table[ Sin[i + j^2], {i, 0, 3, 0.1}, {j, 0, 3, 0.1}]; ListContourPlot[data, Epilog -> {PointSize[Large], Red, Point[{{5, 15}, {10, 5}}]}] • 19.4k 4 votes ### Creating REST Web Service with webMathematica If you have a look at the "webMathematica/Examples/PlotScript/PlotScript.jsp" example : ... 4 votes ### Computing the first derivative in x, y ,and z You could try using ... • 2,944 4 votes Accepted ### How to adapt MSPToExpression function in$PrePrint?

I suppose this is what you need. So the first thing is to use Module since With injects values into held expressions. ...
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### webmathematica to share my game?

This applies to any Wolfram Cloud based web application, not simply to your question, but there are say 4 steps involved in creating a web app. Hopefully some of this carries over from WC to ...
• 45.5k

### Finding the frequency of letters in a string

Why not use LetterCounts LetterCounts[sentence, IgnoreCase -> True] // KeySort N[#]/Total[#] &[%] ...
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### Jacobian matrix evaluation at a point

If you have a look at this link you can take the code as appears there. Namely, ...
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### How to label Ticks in ListDensityPlot

You mean like this: ...
Accepted

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• 349k