first commit

f64tomulti/f64_to_multiarray.py

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+import rclpy
+from rclpy.node import Node
+from std_msgs.msg import Float64, Float64MultiArray, MultiArrayDimension, MultiArrayLayout
+
+class F64ToMultiArray(Node):
+
+    def __init__(self):
+        super().__init__('f64_to_multiarray')
+
+        self.subscriber = self.create_subscription(
+            Float64,
+            '/teleop_convert/f64',
+            self.f64_callback,
+            10
+        )
+
+        self.publisher = self.create_publisher(
+            Float64MultiArray,
+            '/forward_position_controller/commands',
+            10
+        )
+
+    def f64_callback(self, msg):
+        # Create the MultiArrayDimension object
+        dim = MultiArrayDimension()
+        dim.label = 'f64_data'
+        dim.size = 1
+        dim.stride = 1
+
+        # Create the MultiArrayLayout object
+        layout = MultiArrayLayout()
+        layout.dim = [dim]
+        layout.data_offset = 0
+
+        # Create and populate the Float64MultiArray message
+        multiarray_msg = Float64MultiArray()
+        multiarray_msg.layout = layout
+        multiarray_msg.data = [msg.data]
+
+        # Publish the Float64MultiArray message
+        self.publisher.publish(multiarray_msg)
+
+def main(args=None):
+    rclpy.init(args=args)
+
+    node = F64ToMultiArray()
+
+    try:
+        rclpy.spin(node)
+    except KeyboardInterrupt:
+        pass
+
+    node.destroy_node()
+    rclpy.shutdown()
+
+if __name__ == '__main__':
+    main()

package.xml

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+<?xml version="1.0"?>
+<?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
+<package format="3">
+  <name>f64tomulti</name>
+  <version>0.0.0</version>
+  <description>Converts Float64 to 1d Float64Multi</description>
+  <maintainer email="atticusrussell@gmail.com">atticus</maintainer>
+  <license>MIT</license>
+
+  <exec_depend>rclpy</exec_depend>
+  <exec_depend>std_msgs</exec_depend>
+
+  <test_depend>ament_copyright</test_depend>
+  <test_depend>ament_flake8</test_depend>
+  <test_depend>ament_pep257</test_depend>
+  <test_depend>python3-pytest</test_depend>
+
+  <export>
+    <build_type>ament_python</build_type>
+  </export>
+</package>

setup.cfg

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+[develop]
+script_dir=$base/lib/f64tomulti
+[install]
+install_scripts=$base/lib/f64tomulti

setup.py

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+from setuptools import setup
+
+package_name = 'f64tomulti'
+
+setup(
+    name=package_name,
+    version='0.0.0',
+    packages=[package_name],
+    data_files=[
+        ('share/ament_index/resource_index/packages',
+            ['resource/' + package_name]),
+        ('share/' + package_name, ['package.xml']),
+    ],
+    install_requires=['setuptools'],
+    zip_safe=True,
+    maintainer='atticus',
+    maintainer_email='atticusrussell@gmail.com',
+    description='Converts Float64 to 1d Float64Multi',
+    license='MIT',
+    tests_require=['pytest'],
+    entry_points={
+        'console_scripts': [
+            'f64_to_multiarray = f64tomulti.f64_to_multiarray:main',
+        ],
+    },
+)

test/test_copyright.py

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+# Copyright 2015 Open Source Robotics Foundation, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from ament_copyright.main import main
+import pytest
+
+
+# Remove the `skip` decorator once the source file(s) have a copyright header
+@pytest.mark.skip(reason='No copyright header has been placed in the generated source file.')
+@pytest.mark.copyright
+@pytest.mark.linter
+def test_copyright():
+    rc = main(argv=['.', 'test'])
+    assert rc == 0, 'Found errors'

test/test_flake8.py

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+# Copyright 2017 Open Source Robotics Foundation, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from ament_flake8.main import main_with_errors
+import pytest
+
+
+@pytest.mark.flake8
+@pytest.mark.linter
+def test_flake8():
+    rc, errors = main_with_errors(argv=[])
+    assert rc == 0, \
+        'Found %d code style errors / warnings:\n' % len(errors) + \
+        '\n'.join(errors)

test/test_pep257.py

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+# Copyright 2015 Open Source Robotics Foundation, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from ament_pep257.main import main
+import pytest
+
+
+@pytest.mark.linter
+@pytest.mark.pep257
+def test_pep257():
+    rc = main(argv=['.', 'test'])
+    assert rc == 0, 'Found code style errors / warnings'