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How to load a node by a field value?
For D8 EntityFieldQuery has been rewritten. How do I fetch the values of an entity’s field? The quickest way to load a specific node by field value is to use the method loadByProperties (). Normally you loop over the nodes.
How to access a field value for an entity?
If the field is an entity reference field, there are some special ways to get the referenced entities. When using ->entity on the field it automatically returns the loaded entity. That will return an array of entities. using 8.1.
How to update a field based on another field?
Starting Mongo 4.2, db.collection.update () can accept an aggregation pipeline, finally allowing the update/creation of a field based on another field: The first part {} is the match query, filtering which documents to update (in our case all documents).
How to update a field in MongoDB 4.2?
With MongoDB version 4.2+, updates are more flexible as it allows the use of aggregation pipeline in its update, updateOne and updateMany. You can now transform your documents using the aggregation operators then update without the need to explicity state the $set command (instead we use $replaceRoot: {newRoot: “$$ROOT”})
How to define predefined fields in sample material?
Sample material definition. Define an initial condition to specify the initial value of field variable 1 as 1.0 for a node set. Then, define a predefined field variable in the analysis step to specify the value of field variable 1 as 2.0 for the node set.
Why do concentrated loads cause high stress gradients?
Concentrated load (at a point or single node) Force Applying forces to single nodes may cause irritating eects, especially while looking at the stresses in this area. Typically concentrated loads (i.e. forces on a single node) impose high stress gradients.
Can a distributed load be applied by an equation?
254 Distributed loads (varying with respects to the coordinates of the nodes or elements) can be applied by means of an equation.