View source on GitHub
|
Outputs a Summary protocol buffer containing a single scalar value.
tf.compat.v1.summary.scalar(
name, tensor, collections=None, family=None
)
Migrate to TF2
For compatibility purposes, when invoked in TF2 where the outermost context is
eager mode, this API will check if there is a suitable TF2 summary writer
context available, and if so will forward this call to that writer instead. A
"suitable" writer context means that the writer is set as the default writer,
and there is an associated non-empty value for step (see
tf.summary.SummaryWriter.as_default, tf.summary.experimental.set_step or
alternatively tf.compat.v1.train.create_global_step). For the forwarded
call, the arguments here will be passed to the TF2 implementation of
tf.summary.scalar, and the return value will be an empty bytestring tensor,
to avoid duplicate summary writing. This forwarding is best-effort and not all
arguments will be preserved.
To migrate to TF2, please use tf.summary.scalar instead. Please check
Migrating tf.summary usage to
TF 2.0 for concrete
steps for migration. tf.summary.scalar can also log training metrics in
Keras, you can check Logging training metrics in
Keras for detials.
How to Map Arguments
| TF1 Arg Name | TF2 Arg Name | Note |
|---|---|---|
name |
name |
- |
tensor |
data |
- |
| - | step
|
Explicit int64-castable monotonic step
value. If omitted, this defaults to
tf.summary.experimental.get_step(). |
collections |
Not Supported | - |
family
|
Removed | Please use tf.name_scope instead to
manage summary name prefix. |
| - | description
|
Optional long-form str description
for the summary. Markdown is supported.
Defaults to empty. |
Description
The generated Summary has a Tensor.proto containing the input Tensor.
Returns | |
|---|---|
A scalar Tensor of type string. Which contains a Summary protobuf.
|
Raises | |
|---|---|
ValueError
|
If tensor has the wrong shape or type. |