This is known as feedback, since you feed the output back to the input. You can use the output of a process as an input to a previous process. ModelBuilder also provides flexibility in iteration, as an entire model or simply a single tool or process can be executed repeatedly. How does ModelBuilder provide flexibility in iteration? One of the key steps in using branching logic in ModelBuilder is setting one of the conditional outputs as a precondition to further processing. However, if the input dataset is found to have an unknown coordinate system, the model defines a projection system and projects the input data. When to use branching logic in ModelBuilder? The following example uses the Parse Path tool to get the file extension. If the Boolean output is False, use the Select Layer By Attribute tool to make the selection and modify field values. If the Boolean output is True, use the Calculate Field tool to calculate values of the Description field. What to do if the Boolean output is false? The Test, Con, Greater Than, and Raster Calculator tools can be used to perform a Boolean evaluation of raster. The model only copies raster data with a. If the configurable attribute of o.The If Value Is tool checks whether the extension matches the Values parameter. Options explicitly, or point to null with Object.create(null).Ĭonst obj = ) // TypeError: because the property is neither writable nor configurable, it cannot be modified Preserved, you might freeze existing objects in the descriptor object's prototype chain upfront, specify all Inherited properties will be considered as well. If aĭescriptor has both and keys, an exception is thrown.īear in mind that these attributes are not necessarily the descriptor's own properties. Get and set keys, it is treated as a data descriptor. If a descriptor has neither of value, writable, The object through which the property is assigned. When the property is assigned, this function is called with oneĪrgument (the value being assigned to the property) and with this set to The return value will be used as the value of the property.Ī function which serves as a setter for the property, or undefined if When the property is accessed, this function is called withoutĪrguments and with this set to the object through which the property isĪccessed (this may not be the object on which the property is defined due to True if the value associated with the property may be changed with anĪn accessor descriptor also has the following optional keys: getĪ function which serves as a getter for the property, or undefined if Can be any valid JavaScript value (number, True if and only if this property shows up during enumeration of theĪ data descriptor also has the following optional keys: value other attributes of its descriptor cannot be changed (however, if it's a data descriptor with writable: true, the value can be changed, and writable can be changed to false).the type of this property cannot be changed between data property and accessor property, and. (please note: the defaults mentioned here are in the case of defining A descriptor must be one ofīoth data and accessor descriptors are objects. Property described by a getter-setter pair of functions. A data descriptor is a property that has a Property descriptors present in objects come in two main flavors: data descriptors andĪccessor descriptors. fineProperty() are not writable, not enumerable, and not configurable. Object.keys method), whose values may be changed, and which may beĭeleted. Normal property addition through assignment creates properties which show up during This method allows a precise addition to or modification of a property on an object. Deprecated Object.prototype._lookupSetter_().Deprecated Object.prototype._lookupGetter_().Deprecated Object.prototype._defineSetter_().Deprecated Object.prototype._defineGetter_().
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